LOAN AND SECURITY AGREEMENT

                            DATED AS OF JUNE 4, 1999

                                     among

                            GSE POWER SYSTEMS, INC.,
                                  as Borrower,

                          GSE PROCESS SOLUTIONS, INC.,
                                  as Borrower,

                               GSE SYSTEMS, INC.,
                                 as Guarantor,

                                  MSHI, INC.,
                                 as Guarantor,

                GP INTERNATIONAL ENGINEERING & SIMULATION, INC.,
                                 as Guarantor,

                                      and

                             DIME COMMERCIAL CORP.,
                                    as Lender


                                TABLE OF CONTENTS
                                                                            Page

SECTION 1.    DEFINITIONS                                                      1
     1.1      Certain Defined Terms                                            1
     1.2      Accounting Terms                                                15
     1.3      Other Definitional Provisions                                   15

SECTION 2.    LOANS AND COLLATERAL                                            16
     2.1      Loans                                                           16
              (A)   Revolving Loan                                            16
              (B)   Eligible Accounts and Inventory                           17
              (C)   Borrowing Mechanics                                       20
              (D)   Note                                                      21
              (E)   Evidence of Revolving Loan Obligations                    21
              (F)   Letters of Credit                                         21
                    (1)      Maximum Amount                                   21
                    (2)      Reimbursement                                    21
                    (3)      Conditions of Issuance                           22
                    (4)      Request for Letters of Credit                    22
              (G)   Other Letter of Credit Provisions                         22
                    (1)      Obligations Absolute                             22
                    (2)      Nature of Lender's Duties                        23
                    (3)      Liability                                        23
              (H)   Appointment of Borrower Representative                    24
     2.2      Interest                                                        24
              (A)   Rate of Interest                                          24
              (B)   Interest Periods                                          25
              (C)   Computation and Payment of Interest                       25
              (D)   Interest Laws                                             26
              (E)   Conversion or Continuation                                26
     2.3      Fees                                                            27
              (A)   Unused Line Fee                                           27
              (B)   Letter of Credit Fees                                     27
              (C)   Audit Fees                                                27
              (D)   Collateral Monitoring                                     27
              (E)   Other Fees and Expenses                                   27
              (F)   Fees Non-Refundable                                       28
     2.4      Payments and Prepayments                                        28
              (A)   Manner and Time of Payment                                28
              (B)   Mandatory Prepayments, etc.                               28
                    (1)      Overadvance                                      28
                    (2)      Proceeds of Asset Dispositions                   28
              (C)   Voluntary Prepayments and Repayments                      28
              (D)   Payments on Business Days                                 29
     2.5      Term of this Agreement                                          29
     2.6      Statements                                                      29
     2.7      Grant of Security Interest                                      29
     2.8      Capital Adequacy and Other Adjustments                          30
     2.9      Taxes                                                           30
              (A)      No Deductions                                          30
              (B)      Changes in Tax Laws                                    30
     2.10     Required Termination and Prepayment                             31
     2.11     Compensation                                                    32
     2.12     Booking of LIBOR Loans                                          32
     2.13     Assumptions Concerning Funding of LIBOR Loans                   32
     2.14     Allocation of Collateral                                        32
     2.15     Federal Assignment of Claims Act                                35

 SECTION 3.  CONDITIONS TO LOANS, ETC.                                        35
     3.1     Conditions to Loans, etc.                                        35
             (A)      Closing Deliveries                                      35
             (B)      Security Interests                                      35
             (C)      Closing Date Availability                               36
             (D)      Representations and Warranties                          36
             (E)      Fees                                                    36
             (F)      No Default                                              36
             (G)      Performance of Agreements                               36
             (H)      No Prohibition                                          36
             (I)      No Litigation                                           36
             (J)      Indebtedness                                            36
             (K)      Borrowing Base Certificate                              37
             (L)      Export Orders                                           37
     3.2     Additional Conditions to Loans to Fund Permitted Acquisitions    37

 SECTION 4.  REPRESENTATIONS AND WARRANTIES                                   37
     4.1     Organization, Powers, Capitalization                             37
             (A)      Organization and Powers                                 37
             (B)      Capitalization                                          37
     4.2     Authorization of Borrowing, No Conflict                          38
     4.3     Financial Condition                                              38
     4.4     Indebtedness and Liabilities                                     38
     4.5     Account Warranties                                               38
     4.6     Names                                                            39
     4.7     Locations; FEIN                                                  39
     4.8     Title to Properties; Liens                                       39
     4.9     Litigation; Adverse Facts                                        39
     4.10    Payment of Taxes                                                 39
     4.11    Performance of Agreements                                        40
     4.12    Employee Benefit Plans                                           40
     4.13    Intellectual Property                                            40
     4.14    Broker's Fees                                                    40
     4.15    Environmental Compliance                                         40
     4.16    Solvency                                                         40
     4.17    Disclosure                                                       40
     4.18    Insurance                                                        41
     4.19    Compliance with Laws                                             41
     4.20    Bank Accounts                                                    41
     4.21    Subsidiaries                                                     41
     4.22    Employee Matters                                                 41
     4.23    Governmental Regulation                                          42
     4.24    Real Property                                                    42

 SECTION 5.  AFFIRMATIVE COVENANTS                                            42
     5.1     Financial Statements and Other Reports                           42
             (A)      Monthly Financials                                      42
             (B)      Quarterly Financials                                    42
             (C)      Year-End Financials                                     43
             (D)      Accountants' Certification and Reports                  43
             (E)      Compliance Certificate                                  44
             (F)      Borrowing Base Certificates, Registers and Journals     44
             (G)      Reconciliation Reports and Listings and Agings          44
             (H)      Management Report                                       44
             (I)      Government Notices                                      45
             (J)      Events of Default, etc.                                 45
             (K)      Trade Names                                             45
             (L)      Locations                                               45
             (M)      Bank Accounts                                           45
             (N)      Litigation                                              45
             (O)      Projections                                             45
             (P)      Other Indebtedness Notices                              46
             (Q)      Other Information                                       46
             (R)      Opening Balance Sheet                                   46
             (S)      Public Filings                                          46
     5.2     Access to Accountants and Management                             46
     5.3     Inspection                                                       46
     5.4     Collateral Records                                               47
     5.5     Account Covenants; Verification                                  47
     5.6     Collection of Accounts and Payments;
                 Cash Management Arrangements                                 47
     5.7     Endorsement                                                      48
     5.8     Corporate Existence                                              48
     5.9     Payment of Taxes                                                 48
     5.10    Maintenance of Properties; Insurance                             48
     5.11    Compliance with Laws                                             49
     5.12    Further Assurances                                               49
     5.13    Collateral Locations                                             50
     5.14    Instruments; Chattel Paper                                       50
     5.15    Use of Proceeds and Margin Security                              50

 SECTION 6.  FINANCIAL COVENANTS                                              50
     6.1     Minimum EBITDA                                                   50
     6.2     Fixed Charge Coverage                                            51
     6.3     Tangible Net Worth                                               52
     6.4     EximBank Tangible Net Worth                                      52
     6.5     Leverage                                                         52

 SECTION 7.  NEGATIVE COVENANTS                                               52
     7.1     Indebtedness and Liabilities                                     52
     7.2     Guaranties                                                       52
     7.3     Transfers, Liens and Related Matters                             53
             (A)      Transfers                                               53
             (B)      Liens                                                   53
             (C)      No Negative Pledges                                     53
             (D)      No Restrictions on Distributions                        53
     7.4     Investments and Loans                                            54
     7.5     Restricted Junior Payments                                       54
     7.6     Restriction on Fundamental Changes                               54
     7.7     Transactions with Affiliates                                     57
     7.8     Environmental Liabilities                                        57
     7.9     Conduct of Business                                              57
     7.10    Compliance with ERISA                                            57
     7.11    Tax Consolidations                                               57
     7.12    Subsidiaries                                                     57
     7.13    Fiscal Year                                                      57
     7.14    Press Release; Public Offering Materials                         58
     7.15    Bank Accounts                                                    58
     7.16    Amendments.                                                      58

 SECTION 8.  DEFAULT, RIGHTS AND REMEDIES                                     58
     8.1     Event of Default                                                 58
             (A)      Payment                                                 58
             (B)      Default in Other Agreements                             58
             (C)      Breach of Certain Provisions                            58
             (D)      Breach of Warranty                                      58
             (E)      Other Defaults Under Loan Documents                     59
             (F)      Change in Control                                       59
             (G)      Involuntary Bankruptcy; Appointment of Receiver, etc.   59
             (H)      Voluntary Bankruptcy; Appointment of Receiver, etc.     59
             (I)      Liens                                                   60
             (J)      Judgment and Attachments                                60
             (K)      Dissolution                                             60
             (L)      Solvency                                                60
             (M)      Injunction                                              60
             (N)      Invalidity of Loan Documents                            60
             (O)      Failure of Security                                     60
             (P)      Damage, Strike, Casualty                                61
             (Q)      Licenses and Permits                                    61
             (R)      Forfeiture                                              61
             (S)      System Activities.                                      61
             (T)      Inactive Subsidiaries' Activities.                      61
             (U)      Material Adverse Change.                                61
     8.2     Suspension of Commitments                                        61
     8.3     Acceleration                                                     62
     8.4     Remedies                                                         62
     8.5     Appointment of Attorney-in-Fact                                  63
     8.6     Limitation on Duty of Lender with Respect to Collateral          63
     8.7     Application of Proceeds                                          63
     8.8     License of Intellectual Property                                 64
     8.9     Waivers, Non-Exclusive Remedies                                  64

 SECTION 9.  ASSIGNMENT AND PARTICIPATION; SETOFF                             64
     9.1     Assignments and Participations in Loans                          64
     9.2     Set Off and Sharing of Payments                                  65

 SECTION 10. MISCELLANEOUS                                                    65
     10.1    Expenses and Attorneys' Fees                                     65
     10.2    Indemnity                                                        66
     10.3    Amendments and Waivers                                           66
     10.4    Notices                                                          67
     10.5    Survival of Warranties and Certain Agreements                    68
     10.6    Indulgence Not Waiver                                            68
     10.7    Marshaling; Payments Set Aside                                   68
     10.8    Entire Agreement                                                 68
     10.9    Independence of Covenants                                        68
     10.10   Severability                                                     68
     10.11   Headings                                                         68
     10.12   APPLICABLE LAW                                                   69
     10.13   Successors and Assigns                                           69
     10.14   No Fiduciary Relationship; Limitation of Liabilities             69
     10.15   CONSENT TO JURISDICTION                                          69
     10.16   WAIVER OF JURY TRIAL                                             69
     10.17   Construction                                                     70
     10.18   Counterparts; Effectiveness                                      70
     10.19   No Duty                                                          70
     10.20   Year 2000                                                        70

 SECTION 11. GUARANTIES                                                       71
     11.1    Guaranty                                                         71
     11.2    Contribution with Respect to Guaranty Obligations.               71
     11.3    Obligations Absolute.                                            72
     11.4    WAIVER.                                                          73
     11.5    Recovery                                                         73
     11.6    Liability Cumulative                                             73



                           LOAN AND SECURITY AGREEMENT


  This LOAN AND SECURITY AGREEMENT is dated as of June 4, 1999, and entered into
among:

GSE POWER SYSTEMS, INC., a Delaware corporation ("Power"),
GSE PROCESS SOLUTIONS, INC., a Delaware corporation ("Process"),
(each a "Borrower" and, collectively, "Borrowers");
and
GSE SYSTEMS, INC., a Delaware corporation ("Systems");
MSHI, INC., a Virginia corporation ("MSHI");
GP INTERNATIONAL ENGINEERING & SIMULATION, INC., a Delaware corporation ("GRI")
(each(including, without limitation, Systems) a "Guarantor" and collectively the
"Guarantors");
and
DIME COMMERCIAL CORP., a New York corporation ("Lender").

     WHEREAS, all capitalized terms used herein are defined in Section 1 of this
Agreement;

     WHEREAS,  the Guarantors  and Borrowers  desire that Lender extend a credit
facility to Borrowers  to refinance  certain  indebtedness  of Borrowers  and to
provide working capital financing; and

     WHEREAS,  Borrowers and Guarantors desire to secure their obligations under
the Loan Documents by granting to Lender a first priority  security  interest in
and lien upon certain of their property; and

     WHEREAS,  all Borrowers and all  Guarantors  are willing to guaranty all of
the obligations of Borrowers to Lender under the Loan Documents;

     NOW,  THEREFORE,  in  consideration  of the  premises  and the  agreements,
provisions  and covenants  herein  contained,  Borrowers,  Guarantors and Lender
agree as follows:


                             SECTION 1. DEFINITIONS

     1.1 Certain Defined Terms. The following terms used in this Agreement shall
have the following meanings:

     "Accounts"  means  all  "accounts"  (as  defined  in  the  UCC),   accounts
receivable,  contract rights and general  intangibles  relating thereto,  notes,
drafts and other forms of obligations  owed to or owned by any Borrower  arising
or resulting from the sale of goods or the rendering of services.


     "Acquisition   Costs"  means  the  price,  cost  and  expenses  payable  in
connection with a Permitted Acquisition (including all transaction costs and all
indebtedness,  liabilities  and  contingent  obligations  incurred or assumed in
connection therewith.)

     "Adjustment  Date" means,  beginning on September 1, 1999, the first day of
each March,  June,  September or December next  succeeding the date on which the
Lender received the financial  statements  required to be delivered  pursuant to
subsection 5.1(B) for the most recently completed Fiscal Quarter,  together with
the  Compliance  Certificate  and the  Applicable  Margin Report  required to be
delivered pursuant to subsection 5.1(E) with such financial statements.

     "Affected Lender" has the meaning assigned to such term in subsection 2.11.

     "Affiliate"  means  any  Person  (other  than  Lender):   (a)  directly  or
indirectly  controlling,  controlled  by, or under common control with, any Loan
Party; (b) directly or indirectly owning or holding five percent (5%) or more of
any equity interest in Systems or any Borrower; (c) five percent (5%) or more of
whose  stock or other  equity  interest  having  ordinary  voting  power for the
election  of  directors  or the  power to  direct  or  cause  the  direction  of
management,  is directly or indirectly owned or held by Systems or any Borrower;
or (d)  which  has a senior  executive  officer  who is also a senior  executive
officer of Systems or any Borrower.  For purposes of this definition,  "control"
(including with correlative meanings,  the terms "controlling",  "controlled by"
and "under common control with") means the possession  directly or indirectly of
the power to direct or cause the direction of the  management  and policies of a
Person,  whether  through the  ownership  of voting  securities  or other equity
interest, or by contract or otherwise.

     "Agreement"  means this Loan and  Security  Agreement as it may be amended,
restated, supplemented or otherwise modified from time to time.

     "Allocable  Amount"  has the meaning  assigned  to such term in  subsection
11.2(B).

     "Applicable Base Rate Margin" means, at any date, the applicable percentage
set forth below opposite the Level of Rolling EBITDA as of such date:



Level of Rolling EBITDA                              Applicable Base Rate Margin
- -----------------------                              ---------------------------
                                                              
Level I:  Rolling EBITDA is equal
to or less than $3,500,000                                       1.50%

Level II:  Rolling EBITDA is greater
than $3,500,000 but less than or
equal to $4,500,000                                              1.25%

Level III:  Rolling EBITDA is greater
than $4,500,000 but less than or equal
to $5,500,000                                                    1.00%

Level IV:  Rolling EBITDA is greater
than $5,500,000 but less than or equal
to $6,500,000                                                    .75%

Level V:  Rolling EBITDA is greater
than $6,500,000                                                  .50%



; provided  that (a) the  Applicable  Base Rate  Margin  shall be that set forth
above  opposite  Level I from the Closing Date until the first  Adjustment  Date
occurring after the Closing Date, (b) the Applicable Base Rate Margin determined
for any  Adjustment  Date shall remain in effect  until a subsequent  Adjustment
Date for which  Rolling  EBITDA falls within a different  Level,  and (c) if the
financial  statements,  the related  Compliance  Certificate  and the Applicable
Margin  Report for any fiscal  period are not delivered by the date due pursuant
to subsections 5.1(B),  5.1(C) and 5.1(E), the Applicable Base Rate Margin shall
be that set forth above  opposite Level I until the next  subsequent  Adjustment
Date.

     "Applicable LIBOR Margin" means, at any date, the applicable percentage set
forth below opposite the Level of Rolling EBITDA as of such date:




Level of Rolling EBITDA                                  Applicable LIBOR Margin
- -----------------------                                  -----------------------
                                                              

Level I:  Rolling EBITDA is equal to
or less than $3,500,000                                          3.50%

Level II:  Rolling EBITDA is greater
than $3,500,000 but less than or equal
to $4,500,000                                                    3.25%

Level III:  Rolling EBITDA is greater
than $4,500,000 but less than or equal
to $5,500,000                                                    3.00%

Level IV:  Rolling EBITDA is greater
than $5,500,000 but less than or equal
to $6,500,000                                                    2.75%

Level V:  Rolling EBITDA is greater
than $6,500,000                                                  2.50%



; provided  that (a) the  Applicable  LIBOR Margin shall be that set forth above
opposite Level I from the Closing Date until the first Adjustment Date occurring
after the Closing  Date,  (b) the  Applicable  LIBOR Margin  determined  for any
Adjustment  Date shall remain in effect until a subsequent  Adjustment  Date for
which Rolling  EBITDA falls within a different  Level,  and (c) if the financial
statements,  the related Compliance Certificate and Applicable Margin Report for
any fiscal  period are not  delivered  by the date due  pursuant to  subsections
5.1(B),  5.1(C) and 5.1(E),  the Applicable LIBOR Margin shall be that set forth
above opposite Level I until the next subsequent Adjustment Date.

     "Applicable  Margin  Report"  has the  meaning  assigned  to  such  term in
subsection 5.1(E).


     "Asset  Disposition"  means  the  disposition,   whether  by  sale,  lease,
transfer, loss, damage, destruction, condemnation or otherwise, of any or all of
the assets of Systems, any Borrower or any of their respective Subsidiaries.

     "Bank  Letter of  Credit"  means  each  letter  of credit  issued by a bank
acceptable  to and  approved by the Lender for the account of any  Borrower  and
supported by a Risk Participation Agreement.

     "Base Rate" means a variable rate of interest per annum equal to the higher
of (a) the  rate of  interest  from  time  to  time  established  by Dime as its
reference lending rate for domestic  commercial loans at its principal  domestic
office,  or (b) the Federal  Funds  Effective  Rate plus one-half of one percent
(.50%).  Such  reference  lending  rate is merely a  reference  rate and may not
necessarily  represent the lowest or best rate actually  charged to any customer
by Lender or Dime.  Lender and Dime may make  loans to  customers  above,  at or
below such reference lending rate.

     "Base Rate Loans"  means Loans  bearing  interest  at rates  determined  by
reference to the Base Rate.

     "Blocked Accounts" has the meaning assigned to that term in subsection 5.6

     "Blocked  Account  Agreements"  has the  meaning  assigned  to such term in
subsection 5.6.

     "Borrower" and "Borrowers" have the meanings  assigned to such terms in the
preamble to this Agreement.

     "Borrower  Agreement"  means  the  Borrower  Agreement  referred  to in the
definition of Exim-Bank Documents herein.

     "Borrowing  Base"  has the  meaning  assigned  to such  term in  subsection
2.1(A)(2).

     "Borrowing Base  Certificate"  means a certificate and assignment  schedule
duly executed by an officer of Borrower  Representative  appropriately completed
and in substantially the form of Exhibit A.

     "Borrower  Representative"  has  the  meaning  assigned  to  such  term  in
subsection 2.1(H).

     "Business Day" means any day excluding  Saturday,  Sunday and any day which
is a legal  holiday under the laws of the State of New York or is a day on which
banking  institutions  located in such state are closed,  or for the purposes of
LIBOR  Loans  only,  a day on which  commercial  banks are open for  dealings in
Dollar deposits in the London, England (U.K.) market.


     "Capital Expenditures" means all expenditures  (including deposits) for, or
contracts for expenditures  (excluding  contracts for expenditures under or with
respect to Capital Leases,  but including cash down payments for assets acquired
under Capital Leases) with respect to any fixed assets or  improvements,  or for
replacements,  substitutions or additions  thereto,  which have a useful life of
more than one year,  including the direct or indirect acquisition of such assets
by way of increased product or service charges, offset items or otherwise.

     "Capital Lease" means any lease of any property (whether real,  personal or
mixed) that,  in  conformity  with GAAP,  should be  accounted  for as a capital
lease.

     "Cash  Equivalents"  means:  (a) marketable  direct  obligations  issued or
unconditionally  guaranteed  by the United  States  Government  or issued by any
agency thereof and backed by the full faith and credit of the United States,  in
each case maturing  within six (6) months from the date of acquisition  thereof;
(b)  commercial  paper maturing no more than six (6) months from the date issued
and, at the time of acquisition, having a rating of at least A-1 from Standard &
Poor's  Corporation or at least P-1 from Moody's  Investors  Service,  Inc.; (c)
certificates of deposit or bankers'  acceptances  maturing within six (6) months
from the date of issuance  thereof  issued by, or overnight  reverse  repurchase
agreements  from,  any commercial  bank  organized  under the laws of the United
States of  America or any state  thereof  or the  District  of  Columbia  having
combined  capital and surplus of not less than  $250,000,000  and not subject to
setoff  rights in favor of such bank;  and (d)  compensating  balances  with and
deposits in banks to the extent required to maintain  payroll accounts with such
banks.

     "Closing Date" means June 4, 1999.

     "Collateral" has the meaning assigned to that term in subsection 2.7.

     "Collecting Banks" has the meaning assigned to that term in subsection 5.6.

     "Commitment"  or  "Commitments"  means the  commitment  or  commitments  of
Lenders  to make  Loans as set forth in  subsection  2.1(A)  and to  provide  or
participate in Lender Letters of Credit as set forth in subsection 2.1(F).

     "Compliance  Certificate"  means a  certificate  duly executed by the chief
executive   officer  or  chief  financial   officer  of  Systems  and  Borrowers
appropriately completed and in substantially the form of Exhibit B.

     "Corporate  Overhead"  means payments made in cash or accrued by Systems in
connection  with the supervision and management of the businesses and operations
of Borrowers  including,  without  limitation,  in respect of  compensation  for
executive  officers  and other  employees  of Systems  who  participate  in such
supervision and management, and financial,  accounting, legal, computer service,
insurance and other similar payments made in cash relating thereto,  in all such
cases being reasonable in amount.

     "Default"  means a condition,  act or event that,  after notice or lapse of
time or both, would constitute an Event of
Default.

     "Default Rate" has the meaning assigned to that term in subsection 2.2.


     "Dime" means The Dime Savings Bank of New York, FSB and its successors.

     "Domestic  Subsidiary" means any Subsidiary organized under the laws of any
State of the United States.

     "EBITDA"  means,  for any  period,  without  duplication,  the total of the
following for Systems,  Borrowers and their respective consolidated Subsidiaries
on a  consolidated  basis,  each  calculated  for such  period:  (1) net  income
determined in accordance  with GAAP; plus (without  duplication),  to the extent
included  in the  calculation  of net  income,  (2)  the sum of (a)  income  and
franchise taxes paid or accrued; (b) Interest Expenses,  net of interest income,
paid or accrued;  (c) interest paid in kind; (d)  amortization  and depreciation
and (e) other non-cash charges (excluding accruals for cash expenses made in the
ordinary course of business); less, to the extent included in the calculation of
net income, (3) the sum of (a) the income of any Person (other than wholly-owned
Subsidiaries  of  Systems)  in which  Systems  or a Borrower  or a  wholly-owned
Subsidiary  of Systems or a Borrower  has an  ownership  interest  except to the
extent such  income is  received  by Systems or a Borrower or such  wholly-owned
Subsidiary in a cash distribution  during such period;  (b) gains or losses from
sales or other dispositions of assets (other than Inventory in the normal course
of business); and (c) extraordinary or non-recurring gains, but not net of
extraordinary or non-recurring "cash" losses.

     "Eligible  Accounts"  has the meaning  assigned to that term in  subsection
2.1(B).

     "Employee  Benefit Plan" means any employee benefit plan within the meaning
of Section 3(3) of ERISA which (a) is maintained for employees of any Loan Party
or any ERISA Affiliate or (b) has at any time within the preceding six (6) years
been  maintained  for the  employees  of any Loan Party or any current or former
ERISA Affiliate.

     "Environmental   Claims"   means   claims,   liabilities,   investigations,
litigation,   administrative  proceedings,   judgments  or  orders  relating  to
Hazardous Materials or Environmental Laws.

     "Environmental  Laws" means any present or future  federal,  state or local
law,  rule,  regulation or order relating to pollution,  waste,  disposal or the
protection  of human  health  or  safety,  plant  life or animal  life,  natural
resources or the environment.

     "Equipment"  means all  "equipment"  (as  defined  in the UCC),  including,
without  limitation,  all furniture,  furnishings,  fixtures,  machinery,  motor
vehicles,  trucks, trailers,  vessels,  aircraft and rolling stock and all parts
thereof and all additions and accessions thereto and replacements therefor.

     "ERISA"  means the Employee  Retirement  Income  Security  Act of 1974,  as
amended  from  time to  time,  and any  successor  statute  and  all  rules  and
regulations promulgated thereunder.

     "ERISA Affiliate",  as applied to any Loan Party, means any Person who is a
member  of a group  which is under  common  control  with  any Loan  Party,  who
together with any Loan Party is treated as a single  employer within the meaning
of Section 414(b) and (c) of the IRC.

     "Event of Default" means each of the events set forth in subsection 8.1.

     "Exim" or "EximBank" means the Export-Import  Bank of the United States and
any successor thereto.

     "EximBank  Documents"  means  the  Borrower  Agreement  dated  June 4, 1999
between Exim,  Power, and  acknowledged by the Lender,  and the Master Guarantee
Agreement No.  NY-MGA-  96-020 dated June 4, 1999 between Exim and Lender , each
as amended, restated, supplemented or modified from time to time.

     "EximBank  Tangible  Net Worth"  means as to any Person,  as at the date of
determination   thereof,   the  equity  of  such  Person  and  its  consolidated
Subsidiaries  minus the amounts  determined in accordance  with  paragraphs  (a)
through  (e) of the  definition  of Tangible  Net Worth,  all as  determined  in
accordance with GAAP.

     "Federal Funds Effective Rate" means,  for any day, the weighted average of
the rates on overnight  Federal funds  transactions  with members of the Federal
Reserve  System  arranged  by  Federal  funds  brokers,   as  published  on  the
immediately  following  Business Day by the Federal Reserve Bank of New York or,
if  such  rate is not  published  for  any  Business  Day,  the  average  of the
quotations for the day of the requested Loan received by Dime from three Federal
funds brokers of recognized standing selected by Dime.

     "Fiscal Quarter" has the meaning assigned to such term in the definition of
Fiscal Year.

     "Fiscal  Year" means each  twelve  month  period  ending on the last day of
December  in each year (with  quarterly  accounting  periods  ending on or about
March 31,  June 30,  September  30 and  December  31 of each Fiscal Year (each a
"Fiscal Quarter")).

     "Fixed Charge Coverage" means, for any period,  the ratio of Operating Cash
Flow to Fixed Charges.

     "Fixed Charges" means, for any period,  and each calculated for such period
(without  duplication),  (a)  Interest  Expenses  paid or  accrued  by  Systems,
Borrowers and their respective consolidated  Subsidiaries;  plus (b) payments of
principal  with  respect to all  Indebtedness  of Systems,  Borrowers  and their
respective Subsidiaries; plus (c) any provision for (to the extent it is greater
than zero)  income or  franchise  taxes  included  in the  determination  of net
income, excluding any provision for deferred taxes; plus (d) payment of deferred
taxes  accrued in any prior period;  plus (e)  Restricted  Junior  Payments made
during such period.

     "Funded Debt" means  Indebtedness which matures more than one year from the
date of its creation or matures  within one year from such date but is renewable
or  extendible,  at the option of the debtor,  to a date more than one year from
such  date or  arises  under a  revolving  credit  or  similar  agreement  which
obligates  the lender or lenders to extend  credit  during a period of more than
one year from such date  including,  without  limitation,  all amounts of Funded
Debt  required  to be  paid  or  prepaid  within  one  year  from  the  date  of
determination.


     "Funding  Date"  means the date of each  funding of a Loan or issuance of a
Lender Letter of Credit.

     "GAAP" means  generally  accepted  accounting  principles  set forth in the
opinions and  pronouncements of the Accounting  Principles Board of the American
Institute of Certified Public  Accountants and statements and  pronouncements of
the  Financial   Accounting   Standards   Board  that  are   applicable  to  the
circumstances as of the date of determination.

     "GP Strategies" means GP Strategies Corporation, a Delaware corporation.

     "GP  Strategies  Guarantee"  means the  Guarantee  dated June 4, 1999 by GP
Strategies in favor of the Lender.

     "Guarantor" and  "Guarantors"  have the meanings  assigned to such terms in
the preamble to this Agreement.

     "Guarantor  Payment"  has the meaning  assigned to such term in  subsection
11.2(A).

     "Hazardous Material" means all or any of the following: (a) substances that
are defined or listed in, or otherwise classified pursuant to, any Environmental
Laws or regulations as "hazardous substances", "hazardous materials", "hazardous
wastes", "toxic substances" or any other formulation intended to define, list or
classify  substances by reason of deleterious  properties such as  ignitability,
corrosivity,  reactivity,  carcinogenicity,  or toxicity;  (b) oil, petroleum or
petroleum derived substances,  natural gas, natural gas liquids or synthetic gas
and  drilling  fluids,  produced  waters and other  wastes  associated  with the
exploration,  development or production of crude oil,  natural gas or geothermal
resources;  (c)  any  flammable  substances  or  explosives  or any  radioactive
materials;  and (d) asbestos in any form or electrical  equipment which contains
any oil or dielectric fluid containing polychlorinated biphenyls.

     "Inactive  Subsidiary"  means GSE Systems  International  Ltd.,  a Delaware
corporation,  GS Information Systems FSC, Ltd., a Barbados corporation,  and GSE
Services  Company LLC, a Delaware  limited  liability  company,  and GSE Erudite
Software, Inc., a Delaware corporation.

     "Indebtedness",  as applied to any Person, means without  duplication:  (a)
all indebtedness  for borrowed money; (b) all obligations  under leases which in
accordance with GAAP constitute Capital Leases; (c) all notes payable and drafts
accepted   representing   extensions  of  credit  whether  or  not  representing
obligations for borrowed  money;  (d) any obligation owed for all or any part of
the deferred purchase price of property or services if the purchase price is due
more than six months from the date the obligation is incurred or is evidenced by
a note or similar written instrument;  (e) all indebtedness  secured by any Lien
on any property or asset owned or held by that Person  regardless of whether the
indebtedness  secured  thereby  shall  have been  assumed  by that  Person or is
non-recourse  to the credit of that Person;  (f) all  obligations  in respect of
letters  of credit or  bankers'  acceptances;  and (g) any  advances`  under any
factoring arrangement.

     "Intangible  Assets" means all intangible assets  (determined in conformity
with GAAP)  including,  without  limitation,  goodwill,  Intellectual  Property,
licenses,  organizational  costs,  deferred  amounts,  covenants not to compete,
unearned income and restricted funds.

     "Intellectual  Property"  means all  present and future  designs,  patents,
patent  rights  and  applications  therefor,  trademarks  and  registrations  or
applications therefor, trade names, inventions,  copyrights and all applications
and registrations therefor, software or computer programs, license rights, trade
secrets, methods, processes, know-how, drawings,  specifications,  descriptions,
and  all  memoranda,  notes  and  records  with  respect  to  any  research  and
development,  whether now owned or hereafter  acquired,  all goodwill associated
with any of the  foregoing,  and  proceeds of all of the  foregoing,  including,
without limitation, proceeds of insurance policies thereon.

     "Intellectual   Property   Assignment"  means  the  intellectual   property
assignment  to be executed  and  delivered  by Systems,  each  Borrower and each
Guarantor,  in a form  reasonably  acceptable to Lender,  as such  agreement may
hereafter be amended, restated,  supplemented or otherwise modified from time to
time.

     "Intercompany  Indebtedness"  means, with respect to Systems, any Borrower,
any  Guarantor  or  any  of  their  respective  Subsidiaries,   all  assets  and
liabilities  howsoever arising,  which are due to such Person from, or which are
due from such Person to, or which may otherwise  arise from any  transactions by
such Person with Systems, a Borrower, a Guarantor or a Subsidiary.

     "Interest  Expenses"  means,  without  duplication,  for  any  period,  for
Systems,  Borrowers and their respective  Subsidiaries  each calculated for such
period,  the following:  all interest  expenses deducted in the determination of
net income.

     "Interest  Period"  has the  meaning  assigned  to such term in  subsection
2.2(B).

     "Interest Rate" has the meaning assigned to such term in subsection 2.2(A).

     "Inventory"  means all  "inventory"  (as  defined  in the UCC),  including,
without  limitation,  finished goods,  raw materials,  work in process and other
materials and supplies  used or consumed in a Person's  business or furnished or
to be  furnished  under  contracts  of service,  and goods  which are  returned,
repossessed or reclaimed.

     "IRC" means the  Internal  Revenue  Code of 1986,  as amended  from time to
time,  and any  successor  statute  and all  rules and  regulations  promulgated
thereunder.

     "Lender"  has the  meaning  assigned  to such term in the  preamble to this
Agreement.

     "Lender  Letter  of  Credit"  has the  meaning  assigned  to  such  term in
subsection 2.1(F).

     "Lender's Account" means the account designated by Lender from time to time
for payments to Lender under this Agreement.

     "Letter of Credit  Liability" means all reimbursement and other liabilities
of Borrowers with respect to each Lender Letter of Credit, whether contingent or
otherwise,  including:  (a) the amount available to be drawn or which may become
available to be drawn; (b) all amounts which have been paid or made available by
any Lender  issuing a Lender  Letter of Credit or any bank issuing a Bank Letter
of Credit to the extent not reimbursed;  and (c) all unpaid  interest,  fees and
expenses related thereto.

     "Liabilities"  shall have the meaning  given that term in  accordance  with
GAAP and shall include Indebtedness.

     "LIBOR" means, for each Interest Period, a rate of interest equal to:

     (a) the rate of interest  determined by Lender at which deposits in Dollars
for the relevant  Interest Period are offered based on information  presented on
Telerate page 3750 (or such other page as may replace such page on that service)
as of 11:00 A.M.  (London  Time) on the day which is two (2) Business Days prior
to the first day of such Interest Period,  provided, if for any reason such rate
is not  available,  "LIBOR"  shall mean,  for each  Interest  Period,  a rate of
interest equal to the rate of interest determined by Lender at which deposits in
Dollars  for the  relevant  Interest  Period are  offered  based on  information
presented on the Reuters Screen LIBO Page as of 11:00 A.M.  (London time) on the
day which is two (2)  Business  Days  prior to the  first  day of such  Interest
Period;  provided  further that if at least two such offered rates appear on the
Reuters Screen LIBO Page in respect of such Interest Period, the arithmetic mean
of all such  rates (as  determined  by Lender)  will be the rate used;  provided
further that if Reuters ceases to provide LIBOR  quotations,  such rate shall be
the average rate of interest  determined by Lender at which  deposits in Dollars
are  offered  for the  relevant  Interest  Period by The Chase  Manhattan  Bank,
Citibank N.A. or its successors to prime banks in the London interbank market as
of 11:00 A.M. (London time) on the applicable  interest rate determination date;
in each case divided by

     (b) a number equal to 1.0 minus the aggregate (but without  duplication) of
the rates (expressed as a decimal fraction) of reserve requirements in effect on
the day which is two (2) Business  Days prior to the  beginning of such Interest
Period  (including,  without  limitation,  basic,  supplemental,   marginal  and
emergency  reserves  under  any  regulations  of the Board of  Governors  of the
Federal Reserve System or other governmental  authority having jurisdiction with
respect  thereto,  as now and  from  time to time in  effect)  for  Eurocurrency
funding (currently referred to as "Eurocurrency  Liabilities" in Regulation D of
such Board) which are required to be  maintained by a member bank of the Federal
Reserve System,

     (such rate to be adjusted to the nearest one sixteenth of one percent (1/16
of 1%) or, if there is not a nearest one  sixteenth of one percent (1/16 of 1%),
to the next higher one sixteenth of one percent (1/16 of 1%).

     "LIBOR Loans" means at any time that portion of the Loans bearing  interest
at rates determined by reference to LIBOR.


     "Lien"  means any lien,  mortgage,  pledge,  security  interest,  charge or
encumbrance  of any kind,  whether  voluntary  or  involuntary,  (including  any
conditional  sale or other title  retention  agreement,  any lease in the nature
thereof,  and any agreement to give any security interest) and any filing of UCC
financing statements or similar instruments.

     "Loan" or "Loans"  means an advance or advances  under the  Revolving  Loan
Commitment.

     "Loan Documents" means this Agreement,  the EximBank  Documents,  the Note,
the Intellectual  Property  Assignment,  the GP Strategies Guarantee and ManTech
Guarantee,  the Pledge  Agreements,  and all other  instruments,  documents  and
agreements executed by or on behalf of any Loan Party and delivered concurrently
herewith or at any time hereafter to or for Lender in connection with the Loans,
any  Lender  Letter  of  Credit  and  other  transactions  contemplated  by this
Agreement, all as amended, restated, supplemented or modified from time to time.

     "Loan Party" means each of the Borrowers,  Systems,  the Guarantors,  their
respective Subsidiaries,  and any other Person (other than Lender, GP Strategies
and  ManTech)  which is or becomes a party to any Loan  Document  (collectively,
referred to as the "Loan Parties").

     "Loan Year" means each period of twelve (12) consecutive  months commencing
on the Closing Date and on each anniversary thereof.

     "ManTech"   means   Mantech   International   Corporation,   a  New  Jersey
corporation.

     "ManTech  Guarantee"  means the Guarantee  dated June 4, 1999 by ManTech in
favor of the Lender.

     "Material  Adverse Effect" means (1) a material adverse effect upon (a) the
business, operations,  prospects,  properties, assets or condition (financial or
otherwise) of any Loan Party on an individual basis or taken as a whole, (b) the
ability of any Loan Party to perform its obligations  under any Loan Document to
which it is a party or of Lender to enforce or collect any of the Obligations or
(c) the  value  of any  Collateral  or the  validity,  perfection,  priority  or
enforceability  of  Lender's  Lien in any  Collateral,  or (2) any  loss,  cost,
liability or expense  suffered or incurred by any Loan Party involving an amount
in excess of $250,000.

     "Maximum  Revolving  Loan Amount" has the meaning  assigned to that term in
subsection 2.1(A)(1).

     "MGA" means the Master Guarantee Agreement referred to in the definition of
EximBank Documents herein.

     "Notes" means the Revolving Notes.

     "Notice of Borrowing"  has the meaning  assigned to such term in subsection
2.1(C).


     "Obligations" means all obligations,  liabilities and indebtedness of every
nature of each  Loan  Party  from  time to time  owed to  Lender  under the Loan
Documents  including the principal amount of all debts,  claims and indebtedness
(whether  incurred  before or after the  Termination  Date),  accrued and unpaid
interest and all fees, costs and expenses, whether primary,  secondary,  direct,
contingent,  fixed  or  otherwise,  heretofore,  now  and/or  from  time to time
hereafter owing, due or payable  including,  without  limitation,  all interest,
fees,  costs and expenses  accrued or incurred  after the filing of any petition
under any  bankruptcy  or  insolvency  law and the  obligation  to deposit  cash
collateral or other amounts under this Agreement.

     "Operating  Cash Flow" means,  for any period,  (a) EBITDA less (b) Capital
Expenditures  and less (c) the  aggregate  amount of  contingent  and  "earnout"
payments for which  Systems,  either  Borrower or any of their  Subsidiaries  is
obligated in respect of any Permitted Acquisition,  that are paid in cash during
such period.

     "PermittedAcquisition"  has the meaning assigned to such term in subsection
7.6(B).

     "Permitted  Encumbrances"  means the  following  types of Liens:  (a) Liens
(other  than  Liens  relating  to  Environmental  Claims  or ERISA)  for  taxes,
assessments or other governmental  charges:  (x) not yet due and payable; or (y)
due  and  payable  that  are  being  contested  in  good  faith  by  appropriate
proceedings,  provided  that,  in the case of Liens  under  this  clause  (y), a
reserve against the Borrowing Base shall have been  established in the amount of
the claims for any such taxes,  assessments or other governmental  charges;  (b)
statutory Liens of landlords, carriers, warehousemen, mechanics, materialmen and
other similar liens imposed by law, which are incurred in the ordinary course of
business for sums not more than thirty (30) days  delinquent  or the validity of
which is being  contested  in good  faith by  appropriate  proceedings  promptly
instituted and diligently conducted, and (x) the outcome of such proceedings, if
adversely  determined,  could not have a Material  Adverse  Effect,  and (y) the
amount of such Liens shall be  deducted  from the  Borrowing  Base if such Liens
attach to any assets  included in the Borrowing  Base; (c) Liens (other than any
Lien  imposed by ERISA)  incurred or  deposits  made in the  ordinary  course of
business in connection with workers'  compensation,  unemployment  insurance and
other types of social security, statutory obligations,  surety and appeal bonds,
bids, leases, government contracts, trade contracts, performance bonds and other
similar  obligations  (exclusive  of  obligations  for the  payment of  borrowed
money); (d) easements, rights-of-way, restrictions, and other similar charges or
encumbrances  not interfering in any material  respect with the ordinary conduct
of the  business of Systems,  either  Borrower,  any  Guarantor  or any of their
respective Subsidiaries; (e) Liens for purchase money obligations, provided that
(i) the Indebtedness  secured by any such Lien is permitted under subsection 7.1
and (ii) such Lien encumbers only the asset so purchased;  (f) Liens in favor of
Lender; (g) Liens set forth on Schedule 1.1(A); and (h) attachment, judgment and
other similar liens not  attaching to the  Collateral  which arise in connection
with court proceedings,  as to which the execution or other enforcement  thereof
is effectively stayed, or which are fully covered by applicable  insurance as to
which the insurance  company has acknowledged  coverage (which shall not include
any  bonding  or other  arrangement  in  connection  with  which  either  of the
Borrowers or any of the other Loan Parties may be liable to any extent)

     "Person"  means  and  includes  natural  persons,   corporations,   limited
partnerships,  general  partnerships,  limited liability companies,  joint stock
companies,  joint  ventures,  associations,   companies,  trusts,  banks,  trust
companies,  land trusts, business trusts or other organizations,  whether or not
legal entities, and governments and agencies and political subdivisions thereof.

     "Pledge Agreement" means each stock pledge agreement executed and delivered
by Systems,  each Borrower and each Subsidiary that has a Subsidiary in favor of
Lender, in form and substance satisfactory to Lender.

     "Pro Forma" means the  unaudited  consolidated  and  consolidating  balance
sheet of Systems and the Borrowers as of the Closing Date after giving effect to
the transactions contemplated by this Agreement. The Pro Forma is annexed hereto
as Schedule 1.1(B).

     "Projections"   means   Systems'  and  the   Borrowers'   forecasted:   (a)
consolidated   and   consolidating   balance  sheets;   (b)   consolidated   and
consolidating  profit and loss statements;  (c)  consolidated and  consolidating
cash flow statements;  (d) capitalization  statements;  and (e) consolidated and
consolidating  schedule of Indebtedness,  all prepared on a division by division
and Subsidiary by Subsidiary  basis and otherwise  consistent  with Systems' and
such  Borrower's  financial  statements,  together with  appropriate  supporting
details and a statement of underlying assumptions.

     "Reconciliation Report" means a report duly executed by the chief executive
officer or chief financial  officer or another  officer  responsible for finance
matters   of  a  Borrower   Representative   appropriately   completed   and  in
substantially the form of Exhibit C.

     "Restricted Junior Payment" means: (a) any dividend or other  distribution,
direct  or  indirect,  on  account  of any  shares  of any  class  of  stock  or
partnership,  membership or other equity interest of Systems,  a Borrower or any
of their respective Subsidiaries now or hereafter outstanding, except a dividend
payable  solely  with  shares of the class of stock on which  such  dividend  is
declared;  (b) any payment or prepayment of principal  of,  premium,  if any, or
interest on, or any redemption,  conversion,  exchange, retirement,  defeasance,
sinking fund or similar payment, purchase or other acquisition for value, direct
or  indirect,  of any  Indebtedness  subordinated  in  right of  payment  to the
Obligations  or any shares of any class of stock or  partnership,  membership or
other  equity  interest  of  Systems,  a  Borrower  or any of  their  respective
Subsidiaries  now or  hereafter  outstanding,  or the issuance of a notice of an
intention  to do any of the  foregoing;  (c) any payment  made to retire,  or to
obtain the surrender of, any  outstanding  warrants,  options or other rights to
acquire shares of any class of stock or partnership,  membership or other equity
interest of Systems,  a Borrower or any of their respective  Subsidiaries now or
hereafter  outstanding;  and (d) any  payment by  Systems,  a Borrower or any of
their respective Subsidiaries of any management fees, consulting fees or similar
fees to any Affiliate, whether pursuant to a management agreement or otherwise.

     "Revolving  Advance"  means each  advance  made by  Lender(s)  pursuant  to
subsection 2.1(A).

     "Revolving  Loan" means the outstanding  balance of all Revolving  Advances
and any amounts added to the principal balance of the Revolving Loan pursuant to
this Agreement.

     "Revolving  Loan  Commitment"  means  the  commitment  of  Lender  to  make
Revolving Advances pursuant to subsection 2.1(A), and to purchase participations
in Lender  Letters of Credit  pursuant  to  subsection  2.1(F) in the  aggregate
amount set forth on the  signature  page of this  Agreement (or any amendment to
this Agreement) opposite Lender's signature.

     "Revolving  Notes" means the  promissory  notes of the  Borrowers in a form
reasonably acceptable to the Lender, issued pursuant to subsection 2.1(D).

     "Risk  Participation  Agreement"  has the meaning  assigned to that term in
subsection 2.1(F).

     "Rolling  EBITDA"  means  EBITDA  for a period of four  consecutive  Fiscal
Quarters  ending on the last day of each Fiscal Quarter prior to each Adjustment
Date.

     "Subsidiary"   means,   with  respect  to  any  Person,   any  corporation,
association or other  business  entity of which more than fifty percent (50%) of
the  total  voting  power  of  shares  of  stock  (or  equivalent  ownership  or
controlling  interest)  entitled  (without  regard  to  the  occurrence  of  any
contingency) to vote in the election of directors,  managers or trustees thereof
is at the time owned or controlled,  directly or  indirectly,  by that Person or
one or more of the other subsidiaries of that Person or a combination thereof.

     "Tangible  Net  Worth"  means,   as  to  any  Person  as  of  the  date  of
determination  thereof,  the excess of total assets over total  liabilities,  as
determined in accordance with GAAP, and less the sum of (without duplication):

          (a)  the  total  book  value  of all  assets  of such  Person  and its
Subsidiaries properly classified as intangible assets under GAAP, including such
items as good will, the purchase price of acquired  assets in excess of the fair
market value  thereof,  trademarks,  trade names,  service  marks,  brand names,
copyrights, patents and licenses, and rights with respect to the foregoing; plus

          (b) all  amounts  representing  any  write-up in the book value of any
assets of such Person or its Subsidiaries  resulting from a revaluation  thereof
subsequent to December 31,1998; plus

          (c) to the extent otherwise  includable in the computation of Tangible
Net Worth, any subscriptions receivable; plus

          (d) any deferred charges and treasury stock; plus

          (e) software development costs.

     "Target" means, with respect to any Permitted Acquisition, any Person whose
capital stock,  assets or business are being acquired pursuant to such Permitted
Acquisition.

     "Termination Date" means May 31, 2002.


     "UCC" means the Uniform  Commercial Code as in effect on the date hereof in
the State of New York, as amended from time to time, and any successor statute.

     "Unused  Availability"  means, as of any date, the amount (if any) by which
the Maximum Revolving Loan Amount exceeds the Revolving Loan.

     1.2 Accounting Terms. For purposes of this Agreement,  all accounting terms
not otherwise  defined herein shall have the meanings  assigned to such terms in
conformity with GAAP.  Financial  statements and other information  furnished to
Lender  pursuant to subsection 5.1 shall be prepared in accordance with GAAP (as
in effect at the time of such  preparation) on a consistent  basis. In the event
any "Accounting  Changes" (as defined below) shall occur and such changes affect
financial  covenants,  standards  or  terms  in this  Agreement,  then  Systems,
Borrowers  and Lender  agree to enter into  negotiations  in order to amend such
provisions of this Agreement so as to equitably reflect such Accounting  Changes
with the desired result that the criteria for evaluating the financial condition
of Systems,  Borrowers and their respective Subsidiaries shall be the same after
such  Accounting  Changes as if such  Accounting  Changes had not been made, and
until such time as such an amendment  shall have been  executed and delivered by
Systems,  Borrowers  and the other Loan  Parties and Lender,  (A) all  financial
covenants,  standards and terms in this  Agreement  shall be  calculated  and/or
construed as if such  Accounting  Changes had not been made, and (B) Systems and
Borrowers  shall  prepare  footnotes  to  each  Compliance  Certificate  and the
financial   statements   required  to  be  delivered  hereunder  that  show  the
differences  between the  financial  statements  delivered  (which  reflect such
Accounting Changes) and the basis for calculating  financial covenant compliance
(without reflecting such Accounting  Changes).  "Accounting  Changes" means: (a)
changes in accounting  principles  required by GAAP and  implemented by Systems,
Borrowers  and  their  respective   Subsidiaries;   (b)  changes  in  accounting
principles  recommended by Systems' or Borrowers'  certified public accountants;
and (c) changes in carrying  value of any of Systems',  any Borrowers' or any of
their respective Subsidiaries' assets,  liabilities or equity accounts resulting
from any  adjustments in excess of $50,000 in the aggregate  that, in each case,
were  applicable  to, but not included in, the Pro Forma.  All such  adjustments
resulting from expenditures made subsequent to the Closing Date (including,  but
not limited to,  capitalization  of costs and expenses or payment of pre-Closing
Date  liabilities)  shall be treated as expenses in the period the  expenditures
are made and deducted as part of the calculation of EBITDA in such period.


     1.3 Other Definitional Provisions. References to "Sections", "subsections",
"Exhibits"  and  "Schedules"  shall be to  Sections,  subsections,  Exhibits and
Schedules,   respectively,  of  this  Agreement  unless  otherwise  specifically
provided.  Any of the terms  defined in subsection  1.1 may,  unless the context
otherwise  requires,  be used in the  singular  or the plural  depending  on the
reference.  In this  Agreement,  words  importing  any gender  include the other
genders;  the words "including,"  "includes" and "include" shall be deemed to be
followed by the words "without  limitation";  references to agreements and other
contractual  instruments  shall be  deemed  to  include  subsequent  amendments,
assignments,  and  other  modifications  thereto,  but only to the  extent  such
amendments,  assignments and other modifications are not prohibited by the terms
of this  Agreement or any other Loan  Document;  references  to Persons  include
their  respective   permitted   successors  and  assigns  or,  in  the  case  of
governmental  Persons,  Persons  succeeding  to the  relevant  functions of such
Persons;  and all references to statutes and related  regulations  shall include
any amendments of same and any successor statutes and regulations.



                        SECTION 2. LOANS AND COLLATERAL

     2.1  Loans.

          (A)  Revolving  Loan.  Subject  to the  terms and  conditions  of this
Agreement and in reliance upon the  representations  and  warranties of Systems,
Borrowers  and the other  Loan  Parties  set forth  herein and in the other Loan
Documents,  each Lender agrees to lend to Borrowers  from time to time Revolving
Advances.  The Revolving Loan Commitment shall not exceed at any time $9,000,000
to  both  Borrowers  less  any   reductions   pursuant  to  subsection   2.4(B).
Notwithstanding the foregoing, the portion of the Revolving Loan attributable to
either Borrower at any time plus the Letter of Credit Liability of such Borrower
at such time, but only in respect of any Letter of Credit issued for the account
of such Borrower  (together with the aggregate amount theretofore paid by Lender
in respect of any Letter of Credit  issued for the account of such  Borrower and
not reimbursed by such Borrower)  shall not exceed the lesser of : (1)(x) in the
case of Power, $6,000,000,  and (y) in the case of Process,  $3,000,000, and (2)
that  portion of the  Borrowing  Base  attributable  to such  Borrower.  Amounts
borrowed under this  subsection  2.1(A) may be repaid and reborrowed at any time
prior to the earlier of (i) the  termination  of the Revolving  Loan  Commitment
pursuant to subsection  8.3 or (ii) the  Termination  Date.  Except as otherwise
provided  herein,  Lender shall not have any obligation to make an advance under
this subsection  2.1(A) to a Borrower to the extent such advance would cause the
Revolving Loan (after giving effect to any immediate application of the proceeds
thereof) to exceed the Maximum Revolving Loan Amount.

               (1)  "Maximum  Revolving  Loan Amount"  means,  as of any date of
determination,  the lesser of (a) the Revolving Loan Commitment minus the Letter
of Credit  Liability  and (b) the  Borrowing  Base  minus  the  Letter of Credit
Liability.

               (2) "Borrowing Base" means, as of any date of  determination,  an
amount  equal to the sum of (x) 90% of  Eligible  Accounts  of Power  and 85% of
Eligible Accounts of Process less such reserves as Lender in its sole discretion
may elect to establish, plus (y) 60% of Power's Eligible Unbilled Accounts, less
such reserves as Lender in its sole discretion may elect to establish,  plus (z)
20% of Eligible Inventory of Process but not exceeding $600,000 in the aggregate
under this clause (z),  provided that Accounts of Power under which the customer
is  located in the  United  States  shall be in an  aggregate  amount  less than
Power's backlog of orders with customers  located  outside the United States.  A
portion of the Borrowing  Base shall be attributed to each Borrower on the basis
of the  appropriate  percentage  set forth above of the assets of such  Borrower
included in the Borrowing Base.


          (B) Eligible Accounts and Inventory.

          "Eligible  Accounts"  means,  as at any  date  of  determination,  the
aggregate  of all  Accounts  that  Lender,  in its  sole  judgment,  deems to be
eligible  for  borrowing  purposes  (provided  that Lender  shall give  Borrower
Representative reasonably prompt notice following any determination by Lender to
exclude any Accounts from Eligible  Accounts  based on criteria other than those
set  forth  below,  which  notice  shall  include,  subject  to  confidentiality
constraints as determined by Lender in its sole  discretion,  the basis for such
determination  by Lender).  Without  limiting the  generality of the  foregoing,
unless  otherwise  agreed by Lender,  the  following  Accounts  are not Eligible
Accounts:

               (1) Accounts  which remain  unpaid for more than ninety (90) days
after the date of issuance of the original invoice;

               (2) Accounts  which are otherwise  eligible with respect to which
the account  debtor is owed a credit or other  obligation by any  Borrower,  but
only to the extent of such credit or other obligation;

               (3)  Accounts  due  from a  customer  whose  principal  place  of
business is located  outside the United States of America or Canada unless:  (a)
the customer has been approved by Exim and the Account is eligible for inclusion
in the Borrowing Base under the EximBank Documents or (b) such Account is backed
by a letter of credit, in form and substance  acceptable to Lender and issued or
confirmed  by a bank that is  organized  under the laws of the United  States of
America or a State  thereof,  that is acceptable  to Lender;  provided that such
letter of credit has been delivered to Lender as additional collateral;

               (4)  Accounts  due from a  customer  which  Lender  has  notified
Borrower Representative does not have a satisfactory credit standing;

               (5)  Accounts in excess of an  aggregate  face amount of $100,000
with respect to which the customer is the United States of America, any state or
any municipality,  or any department,  agency or instrumentality  thereof unless
the applicable  Borrower has, with respect to such  Accounts,  complied with the
Federal  Assignment  of Claims Act (31 U.S.C.  Section  3727) or any  applicable
statute or municipal ordinance of similar purpose and effect, provided that such
Accounts  shall not be  excluded  from  Eligible  Accounts if the  Borrower  has
complied with its obligations under Section 2.15;

               (6)  Accounts  with respect to which the customer is an Affiliate
of any Borrower or a director,  officer,  agent,  stockholder or employee of any
Borrower or any of its Affiliates;


               (7) Accounts due from a customer if more than fifty percent (50%)
of the aggregate amount of Accounts of such customer owing to any Borrower or in
the  aggregate to all Borrowers  have at the time remained  unpaid for more than
ninety (90) days after the date of issuance of the original invoice;

               (8)  Accounts  with  respect  to which  there  is any  unresolved
dispute with the  respective  customer (but if the amount in dispute  relates to
25% or less of the amount of such Accounts,  only to the extent of the amount of
such dispute);

               (9) Accounts  evidenced by an "instrument" or "chattel paper" (as
defined in the UCC) not in the possession of Lender;

               (10) Accounts with respect to which Lender does not have a valid,
first priority and fully perfected security interest;

               (11) Accounts subject to any Lien except those in favor of Lender
and except  Permitted  Encumbrances  referred  to in clauses  (a) and (h) of the
definition of such term herein as to which a reserve  against or deduction  from
the Borrowing Base shall have been established;

               (12) Accounts with respect to which either  Borrower has received
notice that the customer is the subject of any  bankruptcy  or other  insolvency
proceeding;

               (13)  Accounts due from a customer  (other than the United States
Department  of Energy and its  subdivisions)  to the extent  that such  Accounts
exceed  in the  aggregate  an  amount  equal  to  fifteen  percent  (15%) of the
aggregate of all Accounts at said date;

               (14) Accounts with respect to which the customer's  obligation to
pay is conditional  or subject to a repurchase  obligation or right to return or
with respect to which the goods or services giving rise to such Account have not
been  delivered  (or  performed,  as  applicable)  and  accepted by such account
debtor, including progress billings, bill and hold sales, guarantied sales, sale
or return transactions, sales on approval or consignment sales;

               (15) Any Account with respect to which the customer is located in
(a) New Jersey or Minnesota,  or any other state denying creditors access to its
courts in the absence of a Notice of Business Activities Report or other similar
filing,  unless the  Borrower  holding  such  Account has either  qualified as a
foreign corporation authorized to transact business in such state or has filed a
Notice of Business Activities Report or similar filing with the applicable state
agency for the then current  year, or (b) any country where Exim is off cover in
accordance with EximBank's  Country  Limitation  Schedule in effect from time to
time;

               (16) Accounts with respect to which the customer is a creditor of
any Borrower;  provided, however, that any such Account shall only be ineligible
as to that  portion  of such  Account  which is less than or equal to the amount
owed by Borrowers to such Person; and

               (17) Accounts which do not conform to the requirements  contained
in the EximBank Documents or are excluded from the Borrowing Base by Section 2.3
of the Borrower Agreement.

          "Eligible  Inventory"  means,  as at any  date of  determination,  all
Inventory  of a Borrower  (excluding  all spare  parts)  consisting  of finished
products, work in progress, or raw materials, valued at the lower of its cost or
its market value that  Lender,  in its sole  judgment,  deems to be eligible for
borrowing  purposes  (provided  that Lender shall give  Borrower  Representative
reasonably  prompt notice  following any  determination by Lender to exclude any
Inventory from Eligible  Inventory  based on criteria other than those set forth
below,  which notice shall include the basis for such  determination by Lender).
Without  limiting the generality of the foregoing,  unless  otherwise  agreed by
Lender, Eligible Inventory shall satisfy the following eligibility criteria:

          (1) such  Inventory was acquired by a Borrower in the ordinary  course
of business from a  non-Affiliate  and such  Inventory is  merchantable  and not
obsolete, damaged or otherwise unfit for sale or further processing;

          (2) a Borrower has legal and valid title to such Inventory;

          (3) a Borrower has the full and unqualified  right to assign and grant
a Lien on such Inventory to the Lender as security for the Obligations;

          (4) such  Inventory  is subject to a valid and  enforceable  perfected
Lien in  favor  of the  Lender,  which  Lien is  prior  to the  rights  of,  and
enforceable as such against, all other Persons, and is subject to no other Liens
except  Permitted  Encumbrances  referred to in clauses  (a),  (b) or (h) of the
definition of such term herein as to which a reserve  against or deduction  from
the Borrowing Base shall have been established;

          (5) none of such  Inventory  is  evidenced by bills of lading or other
documents of title, whether negotiable or non-negotiable, unless such negotiable
document  of title has been  issued and duly  negotiated  to a  Borrower  or the
Lender or such  non-negotiable  document of title has been issued in the name of
and  delivered  to a Borrower  or the Lender  and,  in each case,  the issuer is
acceptable to the Lender; and

          (6) such  Inventory is located in a facility  acceptable to the Lender
which is owned by a  Borrower,  leased  by a  Borrower  or  otherwise  under the
control of a Borrower.

          "Eligible  Unbilled  Accounts" means, as at any date of determination,
Power's  rights and claims for services  actually  performed  or goods  actually
delivered to a customer as to which such Borrower has not yet issued an invoice.
In order to qualify as an Eligible Unbilled Account, such rights and claims must
be deemed eligible by the Lender, in its sole judgment,  for borrowing  purposes
(provided  that Lender  shall give  Borrower  Representative  reasonably  prompt
notice  following any  determination  by Lender to exclude such rights or claims
from Eligible  Unbilled  Accounts  based on criteria  other than those set forth
below,  which notice shall include the basis for such  determination by Lender).
The amount of Eligible Unbilled Accounts shall be equal to the amount that would
be included as Eligible Accounts upon issuance of an invoice  therefor,  but not
to exceed  recoverable  costs under the relevant contract and not to include any
accrued  profit.  Without  limiting  the  generality  of the  foregoing,  unless
otherwise  agreed by  Lender,  Eligible  Unbilled  Accounts  shall  satisfy  the
following eligibility criteria:

          (1) Upon  issuance of an invoice  therefor,  an Eligible  Account will
arise in favor of a Borrower;

          (2) Even if no other services were performed or goods delivered to the
customer,  a  Borrower  has the right to issue an invoice  to its  customer  for
services  performed or goods  delivered  prior to the date as of which  Eligible
Unbilled Accounts is determined; and

          (3) No  Eligible  Unbilled  Account  shall  be  included  in  Eligible
Accounts.

          (C) Borrowing Mechanics.

          (1) LIBOR  Loans made on any  Funding  Date  shall be in an  aggregate
minimum amount of $500,000 and integral  multiples of $100,000 in excess of such
amount.

          (2) On any day  when  any  Borrower  desires  an  advance  under  this
subsection 2.1, Borrower  Representative  shall give Lender telephonic notice of
the proposed borrowing by 11:00 a.m. New York City time on the Funding Date of a
Base Rate Loan and three (3)  Business  Days in advance of the Funding Date of a
LIBOR Loan,  which notice  shall also  specify the proposed  Funding Date (which
shall be a Business Day), whether such Loans shall consist of Base Rate Loans or
LIBOR Loans, and for LIBOR Loans the Interest Period applicable thereto, and the
name(s) of Borrower(s) on whose behalf such Loans are being requested.  Any such
telephonic  notice  shall be confirmed in writing on the same day by delivery by
one or more of the Borrower Representatives of a Notice of Borrowing in the form
of Exhibit D annexed  hereto (a "Notice of  Borrowing").  Lender shall not incur
any  liability  to any  Borrower for acting upon any  telephonic  notice  Lender
believes in good faith to have been given by a duly authorized  officer or other
Person authorized to convey such notice on behalf of a Borrower or for otherwise
acting in good faith under this subsection 2.1(C). Lender shall not be obligated
to make  any  advance  pursuant  to any  telephonic  notice  unless  it has also
received the most recent  Borrowing  Base  Certificate  and all other  documents
required under  subsection 5.1 by 11:00 a.m. New York City time.  Each Revolving
Advance shall be deposited by wire transfer in immediately  available funds in a
Borrower's operating account with Dime as Borrower  Representative may from time
to time designate to Lender in writing.  The becoming due of any amount required
to be paid under this  Agreement  or any of the other  Loan  Documents,  whether
principal, accrued interest or fees, shall be deemed irrevocably to be a request
by Borrowers or Borrower  Representative  for a Base Rate  Revolving Loan on the
due date of, and in the amount required to pay, such principal, accrued interest
and fees,  and the  proceeds  of each such  Revolving  Advance if made by Lender
shall  be  disbursed  by  Lender  by  way of  direct  payment  of  the  relevant
obligation.

          (D) Note.  Each of the Borrowers  shall jointly and severally  execute
and  deliver  to  Lender  with  appropriate  insertions  Revolving  Notes in the
principal  amount  of  $6,000,000  and  $3,000,000,  respectively,  to  evidence
Lender's Revolving Loan Commitment to the Borrowers,  respectively. In the event
of an assignment  under subsection 9.1,  Borrowers shall,  upon surrender of the
assigning  Lender's  Note,  issue a new Note to reflect the interest held by the
assigning Lender and its assignee.

          (E) Evidence of Revolving Loan  Obligations.  Each  Revolving  Advance
shall be evidenced by this Agreement,  the Revolving  Notes,  and notations made
from  time to time by  Lender  in its  books  and  records,  including  computer
records.  Lender  shall  record  in its books and  records,  including  computer
records,  the principal  amount of the  Revolving  Loan owing to it from time to
time. Lender's books and records shall constitute  presumptive evidence,  absent
manifest error, of the accuracy of the information contained therein. Failure by
Lender to make any such notation or record shall not affect the  obligations  of
Borrowers to Lender with respect to the Revolving Loans.

          (F)  Letters of Credit.  Subject to the terms and  conditions  of this
Agreement and in reliance upon the  representations  and  warranties of Systems,
Borrowers and the other Loan Parties,  the Revolving  Loan  Commitments  may, in
addition  to  Revolving  Advances,  be  utilized,  upon the  request of Borrower
Representative, for (i) the issuance of letters of credit by Lender, or (ii) the
issuance by Lender of risk participations (a "Risk Participation  Agreement") to
banks to induce  such banks to issue  letters  of credit for the  account of any
Borrower or to Dime to induce Dime to enter into such a risk  participation with
such an issuing  bank (each of (i) and (ii) above a "Lender  Letter of Credit").
In no event  shall any Lender  Letter of Credit be issued to the extent that the
issuance  of such Lender  Letter of Credit  would cause the sum of the Letter of
Credit Liability after giving effect to such issuance plus the Revolving Loan to
exceed  the  lesser  of (x)  the  Borrowing  Base  and (y)  the  Revolving  Loan
Commitment.  Notwithstanding the foregoing,  in no event shall any Lender Letter
of Credit be issued on behalf of any Borrower to the extent that the issuance of
such  Lender  Letter  of  Credit  would  cause  the  sum of the  Revolving  Loan
outstanding to such Borrower plus the Letter of Credit Liability attributable to
such Borrower to exceed that portion of the Borrowing Base  attributable to such
Borrower.

               (1)  Maximum  Amount.  The  aggregate  amount of Letter of Credit
Liability with respect to all Lender  Letters of Credit  outstanding at any time
shall not exceed $9,000,000.


               (2)   Reimbursement.   Borrowers   shall   be   irrevocably   and
unconditionally  obligated  forthwith without  presentment,  demand,  protest or
other formalities of any kind, to reimburse Lender or the issuer for any amounts
paid with respect to a Lender  Letter of Credit  including  all fees,  costs and
expenses paid to any bank that issues a Bank Letter of Credit.  Borrowers hereby
authorize  and direct  Lender,  at  Lender's  option,  to debit each  Borrower's
account (by  increasing  the  principal  balance of the  Revolving  Loan) in the
amount of any payment  made with respect to any Lender  Letter of Credit  issued
for the account of such  Borrower.  All amounts  paid with respect to any Lender
Letter of Credit that are not immediately  repaid by Borrowers with the proceeds
of a Revolving  Advance or  otherwise  shall bear  interest at the Default  Rate
applicable to Base Rate Revolving Loans.

               (3)  Conditions  of Issuance.  In addition to all other terms and
conditions  set forth in this  Agreement,  the issuance of any Lender  Letter of
Credit shall be subject to the  satisfaction  of all  conditions  applicable  to
Revolving  Advances,  and the  conditions  that the  letter of credit be in such
form, be for such amount,  contain such terms and support such  transactions  as
are permitted  under Section 5.15 and would not constitute a Default or Event of
Default.  The expiration date of each Lender Letter of Credit shall be on a date
which is at least thirty (30) days prior to the Termination Date.

               (4) Request for Letters of Credit.  Borrower Representative shall
give Lender at least three (3) Business Days prior notice  specifying the date a
Lender  Letter  of Credit  is to be  issued,  identifying  the  beneficiary  and
describing the nature of the transactions  proposed to be supported thereby. The
notice shall be accompanied by the form of the letter of credit being  requested
and shall contain  certifications  equivalent to those in the last  paragraph of
the Notice of Borrowing.

          (G) Other Letter of Credit Provisions.

               (1)  Obligations   Absolute.   The  obligation  of  Borrowers  to
reimburse  Lender  for  payments  made  under,  and  other  amounts  payable  in
connection  with,  any  Lender  Letter  of  Credit  shall be  unconditional  and
irrevocable  and shall be paid  strictly  in  accordance  with the terms of this
Agreement under all circumstances including the following circumstances:

                    (a) any lack of  validity  or  enforceability  of any Lender
Letter of Credit, Risk Participation Agreement or any other agreement;

                    (b) the  existence of any claim,  set-off,  defense or other
right which any Borrower,  any of its Affiliates or Lender, on the one hand, may
at any time have against any  beneficiary  or transferee of any Lender Letter of
Credit or Bank Letter of Credit (or any Persons for whom any such transferee may
be acting), Lender or any other Person, on the other hand, whether in connection
with this  Agreement,  the  transactions  contemplated  herein or any  unrelated
transaction (including any underlying transaction between any Borrower or any of
its Affiliates and the beneficiary of the letter of credit);

                    (c) any draft,  demand,  certificate  or any other  document
presented  under any Lender  Letter of Credit  is, or is alleged to be,  forged,
fraudulent, invalid or ineffective in any respect or any statement therein being
untrue or inaccurate in any respect;


                    (d)  payment  under any  Lender  Letter  of  Credit  against
presentation of a demand,  draft or certificate or other document which does not
comply with the terms of such letter of credit;  provided  that,  in the case of
any payment by Lender or the issuer of a Bank Letter of Credit  under any Lender
Letter of Credit or Bank Letter of Credit,  either (x) Lender has not acted with
gross  negligence or willful  misconduct  (as determined by a court of competent
jurisdiction)  in  determining  that the demand for  payment  under such  Lender
Letter  of  Credit  or Bank  Letter  of  Credit  complies  on its face  with any
applicable  requirements  for a demand for payment  under such Lender  Letter of
Credit or Bank Letter of Credit or (y) the documents presented under such letter
of credit substantially comply with the terms of such letter of credit;

                    (e) any other circumstance or happening whatsoever, which is
similar to any of the  foregoing,  provided that this clause (e) shall not apply
to any payment by Lender under a Lender  Letter of Credit where the  beneficiary
fails fully to comply with the  conditions  for drawing unless either (x) Lender
has not acted with gross  negligence or willful  misconduct  (as determined by a
court of  competent  jurisdiction)  in  determining  that the demand for payment
under such  Lender  Letter of Credit  complies  on its face with any  applicable
requirements for a demand for payment thereunder or (y) the documents  presented
under such letter of credit  substantially  comply with the terms of such letter
of credit; or

                    (f) the fact that a  Default  or an Event of  Default  shall
have occurred and be continuing.

               (2) Nature of Lender's Duties. As between Lender on the one hand,
and  Borrowers,  on the other hand,  Borrowers  assume all risks of the acts and
omissions  of, or misuse of any  Lender  Letter of Credit  by,  the  beneficiary
thereof. In furtherance and not in limitation of the foregoing, Lender shall not
be responsible: (a) for the form, validity,  sufficiency,  accuracy, genuineness
or legal  effect of any  document in  connection  with the  application  for and
issuance of any Lender  Letter of Credit,  even if it should in fact prove to be
in any or all respects invalid, insufficient,  inaccurate, fraudulent or forged;
(b) for the validity or sufficiency of any instrument  transferring or assigning
or purporting to transfer or assign any Lender Letter of Credit or the rights or
benefits thereunder or proceeds thereof, in whole or in part, which may prove to
be invalid or ineffective for any reason;  (c) for failure of the beneficiary of
any Lender Letter of Credit to comply fully with conditions required in order to
demand payment  thereunder;  provided that, in the case of any payment by Lender
under any Lender  Letter of  Credit,  either (x) Lender has not acted with gross
negligence  or  willful  misconduct  (as  determined  by a  court  of  competent
jurisdiction)  in  determining  that the demand for  payment  under such  Lender
Letter of Credit  complies on its face with any  applicable  requirements  for a
demand for payment  thereunder or (y) the documents  presented under such letter
of credit  substantially comply with the terms of such letter of credit; (d) for
errors,  omissions,  interruptions  or delays in transmission or delivery of any
messages, by mail, cable, telegraph, telex or otherwise,  whether or not they be
in cipher; (e) for errors in interpretation of technical terms; (f) for any loss
or delay in the  transmission or otherwise of any document  required in order to
make a payment  under any  Lender  Letter of  Credit;  (g) for the credit of the
proceeds  of any  drawing  under any Lender  Letter of  Credit;  and (h) for any
consequences arising from causes beyond the control of Lender. None of the above
shall affect, impair, or prevent the vesting of any of Lender's rights or powers
hereunder.


               (3)  Liability.  In  furtherance  and  extension  of  and  not in
limitation of the specific  provisions  herein above set forth, any action taken
or omitted by Lender under or in connection with any Lender Letter of Credit, if
taken or  omitted  in good  faith,  shall not put  Lender  under  any  resulting
liability to any Borrower,  provided that this  paragraph (3) shall not apply if
Lender makes a payment  under a Lender  Letter of Credit  where the  beneficiary
fails fully to comply with the conditions for drawing,  unless either (x) Lender
has not acted with gross  negligence or willful  misconduct  (as determined by a
court of  competent  jurisdiction)  in  determining  that the demand for payment
under such  Lender  Letter of Credit  complies  on its face with any  applicable
requirements for a demand for payment thereunder or (y) the documents  presented
under such letter of credit  substantially  comply with the terms of such letter
of credit.

          (H)  Appointment  of Borrower  Representative.  Each  Borrower  hereby
designates  Systems and the other Borrower,  each acting singly or together with
the other, as its  representative  and agent (each a "Borrower  Representative")
for the purposes of initiating borrowing requests,  requesting Lender Letters of
Credit,  selecting  interest rate options and giving and  receiving  notices and
consents  hereunder or under any of the other Loan Documents.  Lender may regard
any  notice  or  other  communication  pursuant  to any Loan  Document  from any
Borrower  Representative  as a notice  or  communication  from  Borrowers.  Each
Borrower  hereby  covenants  and agrees that each  representation  and warranty,
covenant,  agreement and undertaking made in its name or on its behalf by either
Borrower  Representative  shall be deemed for all  purposes to have been made by
such Borrower and shall be binding upon and enforceable against such Borrower to
the same extent as if the same had been made directly by such Borrower.

     2.2  Interest.

          (A) Rate of Interest.  The Loans and all other  Obligations shall bear
interest from the date such Loans are made or such other Obligations  become due
to the date paid at a rate per annum equal to (i) in the case of Base Rate Loans
and other  Obligations  for which no other interest rate is specified,  the Base
Rate plus the Applicable Base Rate Margin,  and (ii) in the case of LIBOR Loans,
LIBOR plus the  Applicable  LIBOR Margin (the "Interest  Rate").  The applicable
basis  for  determining  the rate of  interest  shall be  selected  by  Borrower
Representative  initially at the time a Notice of Borrowing is given pursuant to
subsection  2.1(C).  The basis for determining the interest rate with respect to
any Loan or a portion of any Loan may be changed  from time to time  pursuant to
subsection  2.2(E). If on any day a Loan or a portion of any Loan is outstanding
with respect to which notice has not been delivered to Lender in accordance with
the terms of this  Agreement  specifying the basis for  determining  the rate of
interest,  then for that day that Loan or portion  thereof  shall bear  interest
determined by reference to the Base Rate.

     After the occurrence and during the  continuance of an Event of Default (i)
the  Loans and all other  Obligations  shall,  at the  option  of  Lender,  bear
interest  at a rate per annum  equal to two  percent  (2%)  plus the  applicable
Interest Rate (the "Default Rate"), and (ii) each LIBOR Loan shall automatically
convert to a Base Rate Loan at the end of any applicable Interest Period.  After
the occurrence and during the continuance of any Event of Default or Default, no
Loans may be converted to LIBOR Loans.


          (B) Interest  Periods.  In connection  with each LIBOR Loan,  Borrower
Representative  shall elect an interest period (each an "Interest Period") to be
applicable to such Loan, which Interest Period shall be either a one, two, three
or four month period; provided that:

               (1) the initial Interest Period for any LIBOR Loan shall commence
on the Funding Date of such Loan;

               (2) in the case of successive  Interest Periods,  each successive
Interest  Period shall  commence on the day on which the  immediately  preceding
Interest Period expires;

               (3) if an Interest Period  expiration date is not a Business Day,
such Interest Period shall expire on the next succeeding  Business Day; provided
that if such  succeeding  Business Day falls in the next  calendar  month,  such
Interest Period shall expire on the immediately preceding Business Day;

               (4) any Interest Period that begins on the last Business Day of a
calendar month (or on a day for which there is no numerically  corresponding day
in the calendar month at the end of such Interest Period) shall, subject to part
(5) and (6) below, end on the last Business Day of a calendar month;

               (5) no Interest Period shall extend beyond the Termination Date;

               (6) no Interest  Period may extend  beyond a scheduled  principal
payment date unless the sum of (a) the aggregate  principal amount of Loans that
are Base Rate Loans or that have  Interest  Periods  expiring  on or before such
date and (b) the Unused  Availability  equals or exceeds  the  principal  amount
required to be paid on the Loans on such date; and

               (7)  there  shall  be no more  than  five  (5)  Interest  Periods
relating to LIBOR Loans outstanding at any time.


          (C) Computation and Payment of Interest. Interest on the Loans and all
other  Obligations shall be computed on the daily principal balance on the basis
of a 360 day year for the actual  number of days  elapsed  in the period  during
which it accrues.  In computing interest on any Loan, the date of funding of the
Loan or the first day of an  Interest  Period  applicable  to such Loan or, with
respect  to a Base Rate Loan  being  converted  from a LIBOR  Loan,  the date of
conversion of such LIBOR Loan to such Base Rate Loan, shall be included; and the
date of  payment  of such  Loan or the  expiration  date of an  Interest  Period
applicable to such Loan, or with respect to a Base Rate Loan being  converted to
a LIBOR Loan,  the date of conversion of such Base Rate Loan to such LIBOR Loan,
shall be excluded; provided that if a Loan is repaid on the same day on which it
is made, one day's  interest  shall be paid on that Loan.  Interest on Base Rate
Loans and all other  Obligations  other  than  LIBOR  Loans  shall be payable to
Lender  monthly in arrears  on the first day of each  month,  on the date of any
prepayment  of Loans,  and at maturity,  whether by  acceleration  or otherwise.
Interest  on LIBOR  Loans  shall be  payable  to  Lender  on the last day of the
applicable  Interest  Period for such Loan, on the date of any prepayment of the
Loans, and at maturity,  whether by acceleration or otherwise.  In addition, for
each LIBOR Loan having an Interest Period longer than three (3) months, interest
on such  Loan  shall  also be  payable  on the last day of each  three (3) month
interval during such Interest Period.

          (D)  Interest  Laws.  Notwithstanding  any  provision  to the contrary
contained in this Agreement or any other Loan Document,  Borrowers  shall not be
required to pay, and Lender  shall not be  permitted  to collect,  any amount of
interest in excess of the maximum amount of interest permitted by applicable law
("Excess  Interest").  If any Excess Interest is provided for or determined by a
court of competent  jurisdiction  to have been provided for in this Agreement or
in any other Loan  Document,  then in such  event:  (1) the  provisions  of this
subsection shall govern and control; (2) neither any Borrower nor any other Loan
Party shall be obligated  to pay any Excess  Interest;  (3) any Excess  Interest
that  Lender may have  received  hereunder  shall be, at  Lender's  option,  (a)
applied as a credit against the outstanding principal balance of the Obligations
or accrued and unpaid  interest (not to exceed the maximum  amount  permitted by
law),  (b)  refunded  to the  payor  thereof,  or  (c)  any  combination  of the
foregoing;  (4) the interest  rate(s) provided for herein shall be automatically
reduced to the maximum  lawful rate allowed  from time to time under  applicable
law (the "Maximum Rate"),  and this Agreement and the other Loan Documents shall
be deemed to have been and shall be,  reformed  and  modified  to  reflect  such
reduction;  and (5) neither any Borrower nor any other Loan Party shall have any
action against  Lender for any damages  arising out of the payment or collection
of any Excess Interest. Notwithstanding the foregoing, if for any period of time
interest on any  Obligations  is  calculated at the Maximum Rate rather than the
applicable  rate under this  Agreement,  and  thereafter  such  applicable  rate
becomes  less  than the  Maximum  Rate,  the rate of  interest  payable  on such
Obligations  shall  remain at the  Maximum  Rate  until each  Lender  shall have
received  the amount of interest  which such Lender would have  received  during
such period on such Obligations had the rate of interest not been limited to the
Maximum Rate during such period.

          (E)  Conversion  or   Continuation.   Subject  to  the  provisions  of
subsection 2.2(A),  Borrower Representative shall have the option to (1) convert
at any time all or any part of outstanding  Loans equal to $500,000 and integral
multiples  of  $100,000  in excess of that  amount from Base Rate Loans to LIBOR
Loans or (2) upon the  expiration of any Interest  Period  applicable to a LIBOR
Loan,  to (a)  continue  all or any portion of such LIBOR Loan equal to $500,000
and integral  multiplies of $100,000 in excess of that amount as a LIBOR Loan or
(b)  convert  all or any  portion of such  LIBOR  Loan to a Base Rate Loan.  The
succeeding  Interest  Period(s) of such  continued or converted Loan commence on
the last day of the Interest  Period of the Loan to be  continued or  converted;
provided that no outstanding  Loan may be continued as, or be converted  into, a
LIBOR Loan, when any Event of Default or Default has occurred and is continuing.

          Borrower     Representative     shall     deliver    a    notice    of
conversion/continuation  to Lender no later  than noon (New York  time) at least
three (3) Business Days in advance of the proposed  conversion/continuation date
("Notice of Conversion/Continuation"). A Notice of Conversion/Continuation shall
certify:  (1)  the  proposed  conversion/continuation  date  (which  shall  be a
Business  Day);  (2) the amount of the Loan to be  converted/continued;  (3) the
nature of the proposed  conversion/continuation;  (4) in the case of  conversion
to, or a continuation of, a LIBOR Loan, the requested  Interest Period;  and (5)
that no Default or Event of Default  has  occurred  and is  continuing  or would
result from the proposed conversion/continuation.


          In lieu of delivering the Notice of Conversion/Continuation,  Borrower
Representative  may give Lender  telephonic  notice by the required  time of any
proposed  conversion/continuation  under this subsection  2.2(E);  provided that
such notice  shall be promptly  confirmed  in writing by delivery of a Notice of
Conversion/Continuation    to    Lender    on    or    before    the    proposed
conversion/continuation date.

          Lender  shall not incur any  liability to Borrowers in acting upon any
telephonic  notice  referred to above that Lender believes in good faith to have
been given by a duly  authorized  officer or other person  authorized  to act on
behalf of Borrower or for otherwise  acting in good faith under this  subsection
2.2(E)  and upon  conversion/continuation  by  Lender  in  accordance  with this
Agreement pursuant to any telephonic notice,  Borrower Representative shall have
effected such conversion or continuation, as the case may be, hereunder.

     2.3 Fees.

          (A) Unused Line Fee. Borrowers shall pay to Lender each month a fee in
an amount equal to the average daily  Revolving Loan  Commitment less the sum of
the average  daily  balance of the  Revolving  Loan during the  preceding  month
multiplied  by  one  half  of one  percent  (.50%)  per  annum,  such  fee to be
calculated  on the basis of a 360 day year for the actual number of days elapsed
and to be  payable  monthly  in  arrears  on the first  day of the  first  month
following the Closing Date and the first day of each month thereafter.

          (B) Letter of Credit Fees.  Borrowers shall pay to Lender each month a
fee with  respect to the Lender  Letters of Credit in the amount of the  average
daily  amount of  Letter  of Credit  Liability  outstanding  during  such  month
multiplied by the Applicable LIBOR Margin in effect from time to time per annum.
Such  fees  will be  calculated  on the  basis of a 360 day year for the  actual
number of days  elapsed and will be payable  monthly in arrears on the first day
of each month.  Borrowers  shall also reimburse  Lender for any and all fees and
expenses,  including  issuance fees, if any, paid by Lender to the issuer of any
Bank Letter of Credit.

          (C) Audit Fees.  Borrowers  agree to pay to Lender promptly after each
request from Lender an audit fee for each inspection equal to Lender's costs per
auditor  per  day  or any  portion  thereof,  together  with  all  out-of-pocket
expenses,  and  Borrowers  agree to  reimburse  Lender  for all fees,  costs and
expenses  paid by Lender to third party  auditors.  The maximum  amount  payable
under this  subsection  2.3 (C) in any calendar  year shall not exceed  $20,000,
provided  that such limit shall not apply after the  occurrence  of any Event of
Default.

          (D) Collateral  Monitoring Fees.  Borrowers shall pay to the Lender on
the first day of each month after the Closing Date a collateral  monitoring  fee
for the preceding month equal to $500.

          (E) Other Fees and Expenses. Borrowers shall pay to Lender all charges
for  returned  items and all other bank charges  incurred by Lender,  as well as
Lender's  standard wire transfer  charges for each wire transfer made under this
Agreement.

          (F) Fees  Non-Refundable.  All of the fees payable  under  Section 2.3
shall be non-refundable.

     2.4 Payments and Prepayments.

          (A) Manner and Time of  Payment.  In its sole  discretion,  Lender may
charge interest and other amounts  payable  hereunder to the Revolving Loan, all
as set forth on Lender's  books and records.  If Lender elects to bill Borrowers
for any amount due hereunder,  such amount shall be immediately  due and payable
with interest  thereon as provided  herein.  All payments made by Borrowers with
respect to the Obligations shall be made without deduction,  defense,  setoff or
counterclaim.  All payments to Lender hereunder shall, unless otherwise directed
by Lender,  be made to Lender's  Account or in accordance  with  subsection 5.6.
Proceeds  remitted to Lender's  Account shall be credited to the  Obligations on
the Business Day such proceeds were received;  provided,  however, that, for the
purpose of  calculating  interest on the  Obligations,  such  proceeds  shall be
deemed  received  on the  second  Business  Day after  receipt  by the Lender of
immediately available funds.

          (B) Mandatory Prepayments, etc..

               (1) Overadvance.  At any time that the Revolving Loan exceeds the
Maximum  Revolving Loan Amount,  Borrowers shall immediately repay the Revolving
Loan to the extent necessary to reduce the principal  balance to an amount equal
to or less than the Maximum  Revolving Loan Amount.  At any time that the sum of
the  Revolving  Loan  outstanding  to any  Borrower  plus the  Letter  of Credit
Liability  at such time,  but only in respect of any Letter of Credit  issued on
behalf of such Borrower exceeds that portion of the Borrowing Base  attributable
to such Borrower,  then such Borrower shall immediately repay the Revolving Loan
to eliminate such excess. If the Revolving Loan is fully repaid, and such excess
still exists, Borrowers shall immediately deposit cash collateral with Lender in
an amount equal to such excess.

               (2) Proceeds of Asset Dispositions.  At such time that the sum of
all proceeds of all Asset  Dispositions  and all proceeds  (net of  underwriting
discounts and commissions  and all other  reasonable  costs  associated with the
transaction)  from any sale or issuance  of any equity or  security  received by
Systems,  Borrowers and their respective  Subsidiaries exceeds $50,000, then any
proceeds received above such amount ("Excess Proceeds") shall be subject to this
subsection  2.4(B)(2).  The Borrowers  shall,  immediately  upon receipt of such
Excess  Proceeds,  prepay  the  Obligations  in an amount  equal to such  Excess
Proceeds and, after all  Obligations  shall have been paid in full,  deposit any
remaining Excess Proceeds as cash collateral with the Lender; provided, however,
that  Lender  shall  release  such cash  collateral  upon  request of a Borrower
Representative  if no  Default or Event of Default  shall have  occurred  and be
continuing.


          (C) Voluntary  Prepayments and Repayments.  Borrowers may, at any time
upon not less than thirty (30) Business Days' prior notice to Lender,  terminate
the  Revolving  Loan  Commitment  and  thereupon  shall  pay in full  all of the
Obligations  without  premium or penalty (but,  for the avoidance of doubt,  the
Borrowers shall remain  obligated for all amounts payable under subsection 2.11)
and shall  cause  Lender to be  released  from all  liability  under any  Lender
Letters of Credit and Risk  Participation  Agreements  or, at  Lender's  option,
Borrowers will deposit cash collateral with Lender in an amount equal to 105% of
the Letter of Credit Liability that will remain  outstanding after prepayment or
repayment,  all under and pursuant to such instruments and documents in form and
substance satisfactory to Lender.

          (D)  Payments  on  Business  Days.  Whenever  any  payment  to be made
hereunder  shall be stated to be due on a day that is not a  Business  Day,  the
payment may be made on the next  succeeding  Business  Day,  except as otherwise
contemplated  by subsection  2.2(B) and (C), and such extension of time shall be
included in the computation of the amount of interest or fees due hereunder.

     2.5  Term  of  this  Agreement.   The  Commitments  shall  (unless  earlier
terminated  pursuant to this  Agreement)  terminate  upon the earlier of (i) the
occurrence of an event specified in subsection 8.3 or (ii) the Termination Date.
Upon  termination in accordance with subsection 8.3 or on the Termination  Date,
all  Obligations  shall become  immediately  due and payable  without  notice or
demand.  Notwithstanding any termination,  until all Obligations have been fully
paid and satisfied, Lender shall be entitled to retain all security interests in
and liens upon all  Collateral  (all of which shall be  released  at  Borrowers'
expense upon  termination of this Agreement and the  Commitments and the payment
and  satisfaction  in full of all  Obligations),  and even after  payment of all
Obligations  hereunder,  Systems' and Borrowers'  obligation to indemnify Lender
and comply with other  provisions  which survive  termination in accordance with
the terms hereof shall continue.

     2.6  Statements.  Lender  shall  render a monthly  statement  of account to
Borrower  Representative  within  twenty  (20) days after the end of each month.
Such  statement of account shall  constitute an account  stated unless  Borrower
Representative  makes written objection thereto within thirty (30) days from the
date such statement is mailed to Borrower  Representative.  Borrowers promise to
pay all of their  Obligations  as such  amounts  become due or are  declared due
pursuant to the terms of this Agreement.

     2.7 Grant of Security  Interest.  To secure the payment and  performance of
the  Obligations,   including  all  renewals,  extensions,   restructurings  and
refinancings of any or all of the  Obligations,  each Loan Party  (excluding any
subsidiary  which  is not a  Domestic  Subsidiary)  hereby  grants  to  Lender a
continuing  security interest,  lien and mortgage in and to all right, title and
interest  of such Loan Party in all  present and future  personal  property  and
fixtures of such Loan Party,  including all the following  property of such Loan
Party,  whether  now owned or  existing  or  hereafter  acquired  or arising and
regardless  of  where  located  (all  being  collectively  referred  to  as  the
"Collateral"):  (A) Accounts,  and all guaranties and security therefor, and all
goods and rights represented  thereby or arising therefrom  including the rights
of stoppage in transit,  replevin and  reclamation;  (B) Inventory;  (C) general
intangibles  and investment  property (as defined in the UCC); (D) documents (as
defined  in the UCC) or other  receipts  covering,  evidencing  or  representing
goods; (E) instruments (as defined in the UCC); (F) chattel paper (as defined in
the UCC);  (G)  Equipment;  (H)  Intellectual  Property;  (I)  deposit  accounts
maintained with any bank or financial institution; (J) cash and other monies and
property in the  possession  or under the control of Lender or any other Person;
(K) books,  records,  ledger cards,  files,  correspondence,  computer programs,
tapes,  disks and related data processing  software that at any time evidence or
contain  information  relating  to any of the  property  described  above or are
otherwise necessary or helpful in the collection thereof or realization thereon;
and (L) products and  proceeds of all or any of the  property  described  above,
including,  without limitation,  the proceeds of any insurance policies covering
any of the  above-described  property.  The Collateral shall include 100% of the
issued and outstanding shares of capital stock and other equity interests of all
direct  Domestic  Subsidiaries  of the  Borrowers  and  Guarantors  (other  than
Inactive  Subsidiaries) and 65% of the issued and outstanding  shares of capital
stock and other equity interests of all direct Subsidiaries of the Borrowers and
the  Guarantors  (other  than  Inactive  Subsidiaries)  which  are not  Domestic
Subsidiaries.

     2.8  Capital  Adequacy  and Other  Adjustments.  If the  Lender  shall have
determined  that  the  adoption  after  the  date  hereof  of any  law,  treaty,
governmental  (or  quasi-governmental)  rule,  regulation,  guideline  or  order
regarding  capital  adequacy,  reserve  requirements or similar  requirements or
compliance by Lender or any corporation  controlling  Lender with any request or
directive   regarding   capital  adequacy,   reserve   requirements  or  similar
requirements  (whether or not having the force of law and whether or not failure
to comply  therewith  would be unlawful)  from any central bank or  governmental
agency or body having  jurisdiction  does or shall have the effect of increasing
the amount of  capital,  reserves or other funds  required to be  maintained  by
Lender or any corporation  controlling  Lender and thereby  reducing the rate of
return  on  Lender's  or such  corporation's  capital  as a  consequence  of its
obligations  hereunder,  then  Borrowers  shall from time to time within fifteen
(15) days after  notice and demand from Lender  (together  with the  certificate
referred to in the next sentence) pay to Lender additional amounts sufficient to
compensate  Lender for such  reduction.  A certificate  as to the amount of such
cost and  showing  the basis of the  computation  (including  any  averaging  or
attribution  methods)  thereof  submitted  by Lender to Borrower  Representative
shall, absent manifest error, be final, conclusive and binding for all purposes.

     2.9 Taxes.

          (A) No  Deductions.  Any  and  all  payments  or  reimbursements  made
hereunder  or  under  the  Note  shall be made  free  and  clear of and  without
deduction  for  any and all  taxes,  levies,  imposts,  deductions,  charges  or
withholdings,  and all liabilities with respect thereto; excluding, however, the
following:  taxes  imposed on the net  income of Lender by the United  States of
America, or the State of New York or any political subdivision thereof (all such
taxes, levies, imposts, deductions,  charges or withholdings and all liabilities
with respect  thereto  excluding  such taxes imposed on net income,  herein "Tax
Liabilities"). If any Loan Party shall be required by law to deduct any such Tax
Liabilities  from or in respect of any sum payable  hereunder to Lender then the
sum payable  hereunder shall be increased as may be necessary (and the Borrowers
shall  pay all Tax  Liabilities  and such net  income  taxes  excluded  from the
definition of "Tax  Liabilities" on such increased amount) so that, after making
all  required  deductions,  Lender  receives an amount equal to the sum it would
have received had no such deductions been made.


          (B)  Changes in Laws.  In the event  that,  subsequent  to the Closing
Date, (i) any changes in any existing law, regulation, treaty or directive or in
the interpretation or application thereof, (ii) any new law, regulation,  treaty
or directive  enacted or any  interpretation  or application  thereof,  or (iii)
compliance by Lender or any corporation  controlling  Lender with any request or
directive  (whether  or not  having  the  force of law)  from  any  governmental
authority, agency or instrumentality:

               (1) does or shall subject Lender or any  corporation  controlling
Lender to any tax of any kind  whatsoever  with respect to this  Agreement,  the
other  Loan  Documents  or any Loans  made or Lender  Letters  of Credit  issued
hereunder or any corporation controlling Lender, or change the basis of taxation
of payments to Lender or any corporation controlling Lender of principal,  fees,
interest or any other  amount  payable  hereunder  (except for net income  taxes
imposed  by the  United  States  of  America,  or the  State  of New York or any
political  subdivision thereof,  with respect to interest or commitment or other
fees  payable  hereunder or changes in the rate of tax on the overall net income
of Lender or any corporation controlling Lender); or

               (2) does or shall impose on Lender or any corporation controlling
Lender any reserve,  special  deposit or other  condition  or increased  cost in
connection with the transactions contemplated hereby;

and the  result of any of the  foregoing  is to  increase  the cost to Lender of
issuing  any  Lender  Letter of  Credit,  entering  into any Risk  Participation
Agreement or making or continuing any Loan hereunder,  as the case may be, or to
reduce any amount receivable hereunder,  then, in any such case, Borrowers shall
promptly  pay to Lender upon its demand,  any  additional  amounts  necessary to
compensate  Lender on an after-tax  basis,  for such  additional cost or reduced
amount receivable, as determined by Lender with respect to this Agreement or the
other Loan Documents. If Lender becomes entitled to claim any additional amounts
pursuant  to  this  subsection   2.9(B),   it  shall  promptly  notify  Borrower
Representative of the event by reason of which Lender has become so entitled.  A
certificate  as to any  additional  amounts  payable  pursuant to the  foregoing
sentence submitted by Lender to Borrower  Representative  shall, absent manifest
error, be final, conclusive and binding for all purposes.

          (C) In the event  that the  Lender  actually  receives  a refund of or
credit  for  taxes in  respect  of which  any  Borrower  or  Guarantor  has made
additional  payments to the Lender under this Section 2.9 which credit or refund
is identifiable by the Lender as being a result of taxes in respect of which any
Borrower or  Guarantor  has made  additional  payments to the Lender  under this
Section 2.9, the Lender shall  promptly  notify the Borrower or Guarantor  which
made such additional  payment and shall remit to it the amount of such refund or
credit  (without  interest)  up to but not  exceeding  the  lesser  of (a)  such
additional payment or payments by such Borrower or Guarantor,  or (b) the actual
after-tax  benefit  to the  Lender  resulting  from  such  refund  or  credit as
conclusively  determined  by the  Lender.  Nothing  contained  herein  shall (i)
obligate  the Lender to apply for such a refund or credit or (ii)  afford to any
Borrower  or  Guarantor  any right to  inspect or review  any  financial  or tax
records of the Lender.


     2.10 Required Termination and Prepayment.  If on any date Lender shall have
reasonably  determined  (which  determination  shall be final and conclusive and
binding upon all  parties)  that the making or  continuation  of LIBOR Loans has
become  unlawful or  impossible  by reason of compliance by Lender in good faith
with any law,  governmental rule, regulation or order (whether or not having the
force of law and whether or not failure to comply  therewith would be unlawful),
then,  and in any such event,  Lender shall  promptly  give notice (by telephone
confirmed  in writing) to Borrower  Representative  of that  determination.  The
obligation of Lender to make or maintain its LIBOR Loans during any period after
such  notice  shall be  terminated  at the  earlier  of the  termination  of the
Interest  Period then in effect or when required by law and  Borrowers  shall no
later than the termination of the Interest Period in effect at the time any such
determination pursuant to this subsection 2.10 is made or, earlier when required
by law, repay or prepay LIBOR Loans together with all interest  accrued  thereon
or convert LIBOR Loans to Base Rate Loans.

     2.11 Compensation.  Borrowers shall compensate Lender, upon written request
by Lender  (which  request  shall set forth in  reasonable  detail the basis for
requesting  such amounts and which shall,  absent  manifest error, be conclusive
and binding upon all parties hereto),  for all losses,  expenses and liabilities
including,  without limitation,  any loss sustained by Lender in connection with
the  re-employment  of  such  funds:  (i) if for  any  reason  a  borrowing  of,
conversion  into or  continuation  of any  LIBOR  Loan  does not occur on a date
specified therefor in a Notice of Borrowing, a Notice of Conversion/Continuation
or a telephonic  request for borrowing or  conversion/continuation;  (ii) if any
prepayment  of any LIBOR  Loans  occurs on a date that is not the last day of an
Interest Period  applicable to that Loan;  (iii) if any prepayment of any of its
LIBOR Loans is not made on any date specified in a notice of prepayment given by
Borrower  Representative;  or (iv) as a  consequence  of any  other  default  by
Borrowers  to  repay  their  LIBOR  Loans  when  required  by the  terms of this
Agreement;  provided that during the period while any such amounts have not been
paid,  Lender  shall be  permitted  to  reserve  an equal  amount  from  amounts
otherwise available to be borrowed under the Revolving Loan.

     2.12 Booking of LIBOR Loans. Lender may make, carry or transfer LIBOR Loans
at, to, or for the  account  of,  any of its branch  offices or the office of an
affiliate of Lender.

     2.13  Assumptions  Concerning  Funding of LIBOR Loans.  Calculation  of all
amounts  payable to Lender under  subsection 2.11 shall be made as though Lender
(or an  affiliate)  had  actually  funded its  relevant  LIBOR Loan  through the
purchase of a LIBOR deposit bearing  interest at LIBOR in an amount equal to the
amount of that  LIBOR  Loan and having a  maturity  comparable  to the  relevant
Interest  Period and through the transfer of such LIBOR deposit from an offshore
office to a domestic office in the United States of America; provided,  however,
that  Lender may fund each of its LIBOR  Loans in any manner it sees fit and the
foregoing  assumption  shall be  utilized  only for the  calculation  of amounts
payable under subsection 2.11.

     2.14 Allocation of Collateral.

     (a) Prior to the  occurrence  of any Event of  Default,  the  Lender  shall
allocate (i) all payments from each Borrower and collections  from Collateral of
each  Borrower to the  Obligations  of the  Borrowers and (ii) all payments from
each  Guarantor,  GP Strategies and ManTech and  collections  from Collateral of
each Guarantor to the  Obligations of the Borrowers.  Such  allocation  shall be
made, at the Lender's  election,  either in accordance  with directions from the
Borrower  Representative  or on any other basis as the Lender shall determine to
use in its sole discretion.


     (b)  After  the  occurrence  and  during  the  continuance  of any Event of
Default,  the  Borrowers  and the  Guarantors  acknowledge  that pursuant to the
EximBank Documents, the Lender may assign to EximBank certain of the obligations
of Power,  Process,  the  Guarantors,  GP  Strategies  and  ManTech  under  this
Agreement and the Loan Documents and certain of the Lender's security  interests
in the Collateral. In the event of such an assignment,  the following provisions
shall apply:

          (i) Direct  Obligations of Borrowers.  Lender shall assign to EximBank
the Obligations of Power arising from Revolving Advances made or attributable to
it, and the Letter of Credit Liability arising from Letters of Credit issued for
the account of Power;  Lender shall retain the  Obligations  of Process  arising
from  Revolving  Advances made or  attributable  to it, and the Letter of Credit
Liability arising from Letters of Credit issued for the account of Process;

          (ii)  Guaranty  Obligations  of  Borrowers.  Lender  shall  assign  to
EximBank  the  Obligations  of  Process  under  Section  11 with  respect to its
guaranty of the  Obligations  of Power;  Lender shall retain the  Obligations of
Power  under  Section 11 with  respect to its  guaranty  of the  Obligations  of
Process;

          (iii) Guaranty  Obligations of Guarantors,  ManTech and GP Strategies.
Lender shall assign to EximBank the Obligations of the Guarantors  under Section
11 and the obligations of ManTech and GP Strategies under the ManTech  Guarantee
and GP Strategies  Guarantee with respect to their respective  guaranties of the
Obligations  of Power;  Lender shall retain the  Obligations  of the  Guarantors
under  Section 11 and the  obligations  of ManTech and GP  Strategies  under the
ManTech  Guarantee and GP Strategies  Guarantee with respect to their respective
guaranties of the Obligations of Process;

          (iv)  Payments  from  Borrowers  and  Guarantors.   All  payments  and
collections  from the Borrowers and the Guarantors or from any Collateral  owned
by any of them shall be allocated and applied as follows:

          (1) Borrower  Payments,  etc. With respect to payments and collections
from a Borrower,  Collateral  owned by such Borrower or Collateral  which is the
capital stock of a Borrower,  first,  to payment of (or as cash  collateral for)
Obligations  arising  from  Revolving  Advances  made  or  attributable  to such
Borrower and Letter of Credit  Liability  arising from Letters of Credit  issued
for the account of such Borrower (the "Direct  Obligations");  and,  second,  to
payment of (or as cash collateral for) Obligations arising under Section 11 with
respect to such  Borrower's  guaranty of the  Obligations of the other Borrower;
and

          (2) Guarantor  Payments etc. With respect to payments and  collections
from a Guarantor or from Collateral of a Guarantor  (other than capital stock of
the Borrowers), ratably to the Direct Obligations of the Borrowers in accordance
with the ratio of the portion of the Revolving Loan Commitment available to each
Borrower  (that is, on the date hereof,  $6,000,000  to Power and  $3,000,000 to
Process)  until all  Direct  Obligations  of a  Borrower  shall be paid (or cash
collateralized)  in full, and  thereafter  100% to the other  Borrower's  Direct
Obligations;

          (v)  Payments  from  GP  Strategies  and  ManTech.  All  payments  and
collections  from GP Strategies  and ManTech  shall be allocated  ratably to the
Direct   Obligations   of  the  Borrowers  in  accordance   with  the  following
percentages:

               (a) 54.5% to the Direct Obligations of Power, and

               (b) 45.5% to the Direct Obligations of Process,

until  all  Direct   Obligations   of  a   Borrower   shall  be  paid  (or  cash
collateralized)  in full, and  thereafter  100% to the other  Borrower's  Direct
Obligations;  provided  that  nothing  in this  paragraph  (v) shall  reduce the
amounts  payable to Lender or EximBank by GP Strategies  under the GP Strategies
Guaranty or by ManTech under the ManTech Guaranty and

          (vi)  Security  Interests,  etc.  Lender  shall  assign to EximBank an
undivided  ratable  portion  of the  security  interest  in the  Collateral  and
Lender's  rights and remedies under this Agreement and the other Loan Documents.
The  Borrowers  and  the  Guarantors   acknowledge  and  agree  that  upon  such
assignment,  each reference to the Lender in any provision of this Agreement and
the other Loan  Documents  relating to the  Collateral  shall,  except where the
context otherwise  requires,  include Lender and EximBank.  Without limiting the
foregoing:

          (1) EximBank  shall have the right to exercise all rights and remedies
under this Agreement and the Loan Documents with respect to the  Obligations and
security  interests  assigned  to it,  and the  Lender  shall  have the right to
exercise  all other  rights and  remedies  hereunder  and  thereunder,  and such
exercise of rights and remedies by the Lender and EximBank may occur at the same
or at different times; and

          (2) the reference in the fourth line of Section 2.7 to "Lender"  shall
be deemed to be a reference to "Lender and EximBank".

     The  priority  of the  security  interests  assigned  to  EximBank  and the
security interests retained by Lender shall be as follows:

          (A) EximBank shall have a first priority  security  interest in all of
the  Collateral  owned by Power and the  capital  stock of Power to  secure  the
Direct Obligations of Power assigned to EximBank; and Lender shall have a second
priority  security  interest  in all of the  Collateral  owned by Power  and the
capital stock of Power to secure the  Obligations of Power under Section 11 with
respect to its guaranty of the Obligations of Process;

          (B) Lender shall have a first priority security interest in all of the
Collateral  owned by  Process  and the  capital  stock of  Process to secure the
Direct  Obligations  of Process  retained by Lender;  and EximBank  shall have a
second priority  security interest in all of the Collateral owned by Process and
the capital stock of Process to secure the  Obligations of Process under Section
11 with  respect  to its  guaranty  of the  Obligations  of  Power  assigned  to
EximBank; and

          (C) Lender and EximBank shall have equal priority  security  interests
in all other  Collateral of the Guarantors,  and the proceeds of such Collateral
shall be shared ratably as provided in paragraph (b)(iv)(2) above.

     Neither  Lender nor  EximBank  shall  exercise  any rights or  remedies  to
enforce its second priority  security  interest provided for in paragraph (A) or
(B) above without the consent of the other,  except if all Direct Obligations of
Power or Process, as applicable, secured by the first priority security interest
provided for in paragraph (A) or (B) above have been paid in full.

     2.15 Federal Assignment of Claims Act.

     In the case of all presently  outstanding and hereafter arising Accounts of
either  Borrower or any  Guarantor  with  respect to which the United  States of
America  or any  department,  agency  or  instrumentality  thereof  ("Government
Accounts") is the obligor,  except  Accounts in the aggregate  face amount as to
all Borrowers and Guarantors less than $100,000,  the following provisions shall
apply:

     (A) On the date hereof or, in the case of such  Accounts  arising after the
date  hereof,  within five (5) Business  Days after such  Accounts  arise,  such
Borrower or  Guarantor  shall  execute  and  deliver to the Lender  confirmatory
assignments  ("Assignments")  and notices of assignment  (the "Notices") in form
and substance  satisfactory to the Lender in its sole discretion.  Each Borrower
and Guarantor hereby irrevocably  authorizes the Lender or its designee,  at the
Borrowers'  expense,  to file, at any time after the  occurrence  and during the
continuance of any Event of Default,  with the United States  government (or the
appropriate  department,  agency or instrumentality)  any such Notices, to which
Assignments may be attached,  and hereby irrevocably  appoints the Lender as its
attorney-in-fact  to execute and file any such Notices,  Assignments and related
documents at any time after the  occurrence  and during the  continuance  of any
Event of Default.

     (B) Schedule  2.15 is a true and complete list of all  Government  Accounts
existing on the date hereof.


                      SECTION 3. CONDITIONS TO LOANS, ETC.

     3.1 Conditions to Loans,  etc. The  obligations of Lender to make Loans and
the  obligation of Lender to issue Lender  Letters of Credit on the Closing Date
and on each Funding Date are subject to  satisfaction  of all of the  conditions
set forth below.

          (A)  Closing  Deliveries.  Lender  shall  have  received,  in form and
substance  satisfactory  to Lender,  all documents,  instruments and information
identified on Schedule  3.1(A) and all other  agreements,  notes,  certificates,
orders,  authorizations,  financing  statements,  mortgages and other  documents
which  Lender  may  at any  time  reasonably  request,  including  the  EximBank
Documents, the GP Strategies Guarantee and the ManTech Guarantee.

          (B)  Security  Interests.  Lender  shall  have  received  satisfactory
evidence that all security  interests  and liens  granted to Lender  pursuant to
this  Agreement  or the  other  Loan  Documents  have been  duly  perfected  and
constitute  first  priority liens on the  Collateral,  subject only to Permitted
Encumbrances.


          (C) Closing Date Availability. After giving effect to the consummation
of the transactions  contemplated  hereunder on the Closing Date and the payment
by  Borrowers  of all costs,  fees and expenses  relating  thereto,  the Maximum
Revolving  Loan Amount on the Closing Date shall exceed the Revolving  Loan plus
the Letter of Credit Liability by at least $2,000,000.

          (D) Representations and Warranties. The representations and warranties
contained  herein and in the Loan Documents shall be true,  correct and complete
in all material  respects on and as of the Closing Date and that Funding Date to
the  same  extent  as  though  made  on and as of  that  date,  except  for  any
representation  or warranty  limited by its terms to a specific  date and taking
into  account any  amendments  to the  Schedules  or Exhibits as a result of any
disclosures  made by Systems and  Borrowers to Lender after the Closing Date and
approved by Lender in its sole discretion.

          (E) Fees.  Borrowers  shall have paid the fees  payable on the Closing
Date referred to in subsection 2.3. and shall have paid or reimbursed Lender for
any fees payable by Borrowers or Lender under the EximBank Documents.

          (F) No Default.  No event shall have  occurred  and be  continuing  or
would result from the  consummation of the requested  borrowing or issuance of a
Lender Letter of Credit that would constitute an Event of Default or a Default.

          (G)  Performance of  Agreements.  Each Loan Party shall have performed
all  agreements and satisfied all  conditions  which any Loan Document  provides
shall be performed by it on or before that Funding Date.

          (H) No  Prohibition.  No  order,  judgment  or  decree  of any  court,
arbitrator or governmental  authority shall purport to enjoin or restrain Lender
from making any Loans or issuing any Lender Letters of Credit.

          (I) No Litigation.  There shall not be pending or, to the knowledge of
Systems or Borrowers,  threatened,  any action,  charge,  claim,  demand,  suit,
proceeding,  petition,  governmental investigation or arbitration by, against or
affecting  Systems,  either Borrower or any of their respective  Subsidiaries or
any  property  of any such  Person  that could in the  opinion of Lender  have a
Material  Adverse  Effect and that has not been disclosed to Lender by Borrowers
in writing,  and there shall have  occurred no  development  in any such action,
charge, claim, demand, suit, proceeding, petition, governmental investigation or
arbitration  that has been  disclosed to Lender that,  in the opinion of Lender,
could have a Material Adverse Effect.

          (J) Indebtedness. All Indebtedness of all of the Loan Parties shall be
repaid with the initial  Revolving  Loans and  arrangements  satisfactory to the
Lender shall have been made with respect to all letters of credit issued for the
account of any Loan Party which remains  outstanding on the Closing Date, except
the foregoing shall not apply to Indebtedness  which is permitted to exist under
Section 7.1.

          (K)  Borrowing  Base  Certificate.  The Lender  shall have  received a
Borrowing Base  Certificate  current within 5 Business Days prior to the Funding
Date in the case of Power and 30 days prior to the  Funding  Date in the case of
Process.

          (L) Export Orders. In the case of Power,  Lender shall have received a
written  summary of the Export Orders against which the Loan or Lender Letter of
Credit is to be made current  within 5 Business  Days prior to the Funding Date,
except if there  have been no  changes  since the  delivery  of the most  recent
summary, each such summary to comply with the MGA.

     3.2  Additional  Conditions to Loans to Fund  Permitted  Acquisitions.  The
obligations of Lender to make Loans to fund Permitted  Acquisitions  are subject
to  satisfaction  of all of the  conditions  set  forth in  subsection  7.6,  in
addition to those conditions set forth in subsection 3.1.

                    SECTION 4. REPRESENTATIONS AND WARRANTIES

     To induce  Lender to enter  into this  Agreement,  and to make Loans and to
issue Lender  Letters of Credit,  each of Systems,  the  Borrowers and the other
Guarantors  represents and warrants to Lender that the following  statements are
and will be true, correct and complete:

     4.1 Organization, Powers, Capitalization.

          (A) Organization and Powers. Each of the Loan Parties is a corporation
duly  organized,  validly  existing and in good  standing  under the laws of its
jurisdiction of incorporation  and qualified to do business and in good standing
in all states and countries  where such  qualification  is required except where
failures to be so qualified could not in the aggregate be reasonably expected to
have a Material  Adverse  Effect.  Each of the Loan  Parties  has all  requisite
corporate power and authority to own and operate its properties, to carry on its
business as now  conducted  and proposed to be  conducted  and to enter into and
perform each Loan Document.

          (B) Capitalization. Except as set forth on Schedule 4.1(B), all issued
and  outstanding  shares of capital  stock of each of the Loan  Parties are duly
authorized and validly issued, fully paid, nonassessable, and are free and clear
of all Liens other than those in favor of Lender and all such shares were issued
in compliance with all applicable  state,  federal and other laws concerning the
issuance of securities.  The place of organization or incorporation of each Loan
Party is  listed  in  Schedule  4.1(B).  The  capital  stock of each of the Loan
Parties is owned by the  stockholders  and in the  amounts set forth on Schedule
4.1(B) (in the case of Systems with shares held by the public being specified in
the  aggregate).  To the best knowledge of Systems,  each Person or group having
beneficial  ownership  of more than five  percent  (5%) of the capital  stock of
Systems is  identified  on Schedule  4.1(B) (the terms  "group" and  "beneficial
ownership", as used herein, having the meanings given in Section 13(d)(3) of the
Securities  Exchange  Act of  1934,  as  amended,  and  Rule  13d-3  promulgated
thereunder).  No shares of the capital stock of any Loan Party, other than those
described  above,  are issued and  outstanding.  Except as set forth on Schedule
4.1(B), there are no preemptive or other outstanding rights, options,  warrants,
conversion rights or similar  agreements or  understandings  for the purchase or
acquisition  from  any  Loan  Party  of any  shares  of  capital  stock or other
securities of any such entity.

     4.2 Authorization of Borrowing, No Conflict. Each of the Loan Parties which
is now or  hereafter a party to any Loan  Document has the  corporate  power and
authority  to incur  the  Obligations  and to grant  security  interests  in the
Collateral. On the Closing Date, the execution,  delivery and performance of the
Loan  Documents  by each  Loan  Party  signatory  thereto  will  have  been duly
authorized by all necessary  corporate and  shareholder  action.  The execution,
delivery and performance by each Loan Party of each Loan Document to which it is
a party and the consummation of the transactions  contemplated by this Agreement
and the other Loan Documents by each Loan Party, and the enforcement  thereof by
Lender (A) do not contravene and will not be in  contravention of any applicable
law, the  corporate  charter or bylaws (or other  constituent  documents) of any
Loan Party or any agreement or order by which any Loan Party or any Loan Party's
property  is bound  and (B) do not and  will not  require  any  consent,  order,
license,   validation  or  approval  of  or  filing  or  registration  with  any
government,  governmental  authority or agency,  court or  administrative  body,
except  such as have been duly  obtained,  are in full  force and effect and are
listed in  Schedule  4.2.  This  Agreement  is,  and the other  Loan  Documents,
including the Note when  executed and  delivered  will be, the legally valid and
binding   obligations  of  the  applicable  Loan  Parties   respectively,   each
enforceable  against the Loan Parties,  as applicable,  in accordance with their
respective terms.

     4.3 Financial  Condition.  All  financial  statements  concerning  the Loan
Parties which have been or will  hereafter be furnished by any of them to Lender
pursuant to this Agreement have been or will be prepared in accordance with GAAP
consistently  applied  throughout  the  periods  involved  (except as  disclosed
therein)  and  do  or  will  present  fairly  the  financial  condition  of  the
corporations (or other entities) covered thereby as at the dates thereof and the
results  of their  operations  for the  periods  then  ended.  The Pro Forma was
prepared by Systems and Borrowers  based on the unaudited  consolidated  balance
sheet of Systems,  Borrowers and their respective  Subsidiaries  dated April 30,
1999 and,  during the period from such date through the Closing Date,  there has
been no material  change in the business,  operations or financial  condition of
Systems,  either  of  Borrowers  or any of their  respective  Subsidiaries.  The
Projections  delivered  and to be  delivered  have been and will be  prepared by
Systems  and  Borrowers  in light  of the past  operations  of the  business  of
Systems,  Borrowers  and their  respective  Subsidiaries,  and such  Projections
represent and will  represent  the good faith  estimate of Systems and Borrowers
and their respective  senior  management  concerning the most probable course of
its business as of the date such Projections are prepared and delivered.

     4.4 Indebtedness and Liabilities. As of the Closing Date, no Loan Party has
(a) any  Indebtedness  except as  reflected on Schedule 4.4 and the Pro Forma or
(b) any Liabilities other than as reflected on the Pro Forma or as
incurred in the ordinary course of business following the date of the Pro Forma.

     4.5 Account Warranties. As to each existing Account: (a) at the time of its
creation,  such  Account  was  a  valid,  bona  fide  account,  representing  an
undisputed  indebtedness  (except any such disputed Account which is excluded in
whole or in part from Eligible  Accounts in accordance with paragraph (8) of the
definition of Eligible Accounts herein) incurred by the named account debtor for
goods actually sold and delivered or for services completely rendered; (b) there
are no setoffs,  offsets or  counterclaims,  genuine or otherwise,  against such
Account;  (c)  such  Account  does not  represent  a sale to an  Affiliate  or a
consignment,  sale or return or a bill and hold  transaction;  (d) no  agreement
exists  permitting any deduction or discount  (other than the discount stated on
the  invoice);  (e) the  Borrower or  Guarantor  that holds such  Account is the
lawful  owner of the Account and has the right to grant a security  interest and
assign the same to Lender;  (f) such Account is free of all security  interests,
liens and encumbrances other than those in favor of Lender; and (g) such Account
is due and payable in accordance with its terms.

     4.6 Names. Schedule 4.6 sets forth all names, trade names, fictitious names
and business names under which any Loan Party currently conducts business or has
at any time during the past six years conducted business.

     4.7  Locations;  FEIN.  Schedule  4.7 sets forth the  location of each Loan
Party's  principal place of business,  chief executive  office,  the location of
each Loan Party's  books and records,  the location of all other offices of such
Loan  Party  and all  Collateral  locations,  and such  locations  are such Loan
Party's sole  locations for its business and the  Collateral.  Each Loan Party's
federal employer  identification  number,  if any, is also set forth on Schedule
4.7.

     4.8  Title  to  Properties;   Liens.  Each  Loan  Party  and  each  of  its
Subsidiaries  has  good,  sufficient  and  legal  title,  subject  to  Permitted
Encumbrances,  to all its respective properties and assets. Except for Permitted
Encumbrances, all such properties and assets are free and clear of Liens. To the
best  knowledge of Systems and each  Borrower  after due  inquiry,  there are no
actual,  threatened  or  alleged  defaults  with  respect  to any leases of real
property  under  which  Systems,  either  Borrower  or any of  their  respective
Subsidiaries is lessee or lessor which would have a Material Adverse Effect.

     4.9 Litigation;  Adverse Facts.  Except as set forth on Schedule 4.9, there
are no judgments outstanding against any Loan Party or affecting any property of
any Loan Party nor is there any action, charge, claim, demand, suit, proceeding,
petition,  governmental investigation or arbitration now pending or, to the best
knowledge of Systems or either Borrower after due inquiry, threatened against or
affecting any Loan Party or any property of any Loan Party which individually or
in the aggregate could  reasonably be expected to result in any Material Adverse
Effect.  No Loan Party has any  notice to the  effect  that it is exposed to any
liability which could  reasonably be expected to result in any Material  Adverse
Effect.

     4.10  Payment  of Taxes.  All tax  returns  and  reports of each Loan Party
required  to be filed by any of them  have been  timely  filed,  and all  taxes,
assessments,  fees and other  governmental  charges  upon such  Persons and upon
their  respective  properties,  assets,  income and franchises which are due and
payable have been paid when due and payable or are being contested in good faith
by  appropriate   proceedings  and  appropriate   reserves  therefor  have  been
established in accordance with GAAP. Except as set forth on Schedule 4.10, as of
the Closing Date, none of the United States income tax returns of any Loan Party
are under audit. No tax liens have been filed and no claims (except as otherwise
permitted by Section 5.9) are being asserted with respect to any such taxes. The
charges, accruals and reserves on the books of each Loan Party in respect of any
taxes or other governmental charges are in accordance with GAAP.

     4.11  Performance of Agreements.  None of the Loan Parties is in default in
the performance,  observance or fulfillment of any of the obligations, covenants
or conditions contained in any contractual obligation of any such Person, and no
condition  exists that,  with the giving of notice or the lapse of time or both,
would constitute such a default.

     4.12 Employee Benefit Plans. Each Loan Party and each ERISA Affiliate is in
compliance in all material respects with all applicable provisions of ERISA, the
IRC and all  other  applicable  laws  and the  regulations  and  interpretations
thereof with respect to all Employee  Benefit Plans.  No material  liability has
been incurred by any Loan Party,  any of its Subsidiaries or any ERISA Affiliate
which remains  unsatisfied for any funding  obligation,  taxes or penalties with
respect to any Employee Benefit Plan.

     4.13  Intellectual  Property.  Each Loan Party and each of its Subsidiaries
owns,  is licensed to use or otherwise  has the right to use,  all  Intellectual
Property  used in or  necessary  for the conduct of its  business  as  currently
conducted, and all such Intellectual Property is identified on Schedule 4.13.

     4.14  Broker's  Fees.  No broker's or finder's  fee or  commission  will be
payable with respect to any of the transactions contemplated hereby.

     4.15 Environmental Compliance. Each Loan Party has been and is currently in
compliance  with all  applicable  Environmental  Laws,  including  obtaining and
maintaining in effect all permits,  licenses or other authorizations required by
applicable Environmental Laws. There are no claims, liabilities, investigations,
litigation,  administrative  proceedings,  whether  pending  or  threatened,  or
judgments  or orders  relating to any  Hazardous  Materials  which have been (a)
asserted or, to the best  knowledge of each Loan Party,  threatened  against any
Loan Party or relating to any real property  currently or formerly  owned by any
Loan  Party  or (b) to the  best  knowledge  of each  Loan  Party,  asserted  or
threatened against any real property currently or formerly leased or operated by
any Loan Party.

     4.16 Solvency. After giving effect to the transactions  contemplated by the
Loan  Documents,  and as of,  from and  after the date of this  Agreement,  each
Borrower,   each  Guarantor,  GP  Strategies  and  ManTech  (after  taking  into
consideration  all rights of  contribution  and  indemnity  it has  against  the
others):  (a) owns and will own assets the fair  salable  value of which are (i)
greater  than  the  total  amount  of  its  liabilities   (including  contingent
liabilities)  and (ii)  greater than the amount that will be required to pay the
probable  liabilities of such Person as they mature; (b) has capital that is not
unreasonably  small in relation to its  business as  presently  conducted or any
contemplated  or  undertaken  transaction;  and (c) does not intend to incur and
does not believe  that it will incur debts  beyond its ability to pay such debts
as they become due.  There is no material  fact known to Systems or any Borrower
that has or could  have a  Material  Adverse  Effect and that has not been fully
disclosed  herein  or in  such  other  documents,  certificates  and  statements
furnished to Lender for use in  connection  with the  transactions  contemplated
hereby.

     4.17 Disclosure. No representation, warranty or statement contained in this
Agreement,  the financial  statements,  the other Loan  Documents,  or any other
document,  certificate or written statement  furnished to Lender by or on behalf
of any of Systems,  either  Borrower or any Guarantor for use in connection with
the Loan Documents  contains any untrue statement of a material fact or omitted,
omits  or will  omit to state a  material  fact  necessary  in order to make the
statements   contained  herein  or  therein  not  misleading  in  light  of  the
circumstances  in which  the same  were  made.  The  projections  and pro  forma
financial  information  contained  in such  materials  are based upon good faith
estimates and assumptions  believed by such Persons to be reasonable at the time
made.  There is no  material  fact  known to any Loan Party that has had or will
have a Material Adverse Effect and that has not been disclosed herein or in such
other  documents,  certificates  and  statements  furnished to Lender for use in
connection with the transactions contemplated hereby.

     4.18 Insurance.  Each Loan Party maintains  adequate insurance policies for
public liability,  workers  compensation,  employee benefit liability,  fidelity
liability,  directors' and officers' liability,  errors and omissions,  property
damage  for  its  business  and  properties,  product  liability,  and  business
interruption  in amounts  customarily  carried or maintained by  corporations of
established reputation engaged in similar businesses.  Such policies are in full
force and effect.  No notice of  cancellation  has been received with respect to
such policies and such Loan Party and each of its  Subsidiaries is in compliance
with all conditions contained in such policies.

     4.19  Compliance  with  Laws.  No Loan  Party is in  violation  of any law,
ordinance,  rule, regulation,  order, policy,  guideline or other requirement of
any domestic or foreign  government or any  instrumentality  or agency  thereof,
having  jurisdiction  over the conduct of its  business or the  ownership of its
properties,  including,  without limitation,  any violation relating to any use,
release,  storage,  transport  or  disposal  of any  Hazardous  Material,  which
violation  would subject such Loan Party or any of its  Subsidiaries,  or any of
its  respective  officers  to  criminal  liability  or  individually  or in  the
aggregate with all such  violations  have a Material  Adverse Effect and no such
violation has been alleged.

     4.20 Bank  Accounts.  Schedule  4.20 sets  forth the  account  numbers  and
locations of all bank accounts of each Loan Party.

     4.21  Subsidiaries.  Neither Systems nor any Borrower has any  Subsidiaries
other than as set forth on Schedule 4.1(B).

     4.22 Employee  Matters.  Except as set forth on Schedule  4.22, (a) no Loan
Party  nor any of such Loan  Party's  employees  is  subject  to any  collective
bargaining  agreement,  (b) no petition for  certification  or union election is
pending  with  respect  to the  employees  of any  Loan  Party  and no  union or
collective  bargaining unit has sought such  certification  or recognition  with
respect  to the  employees  of any Loan  Party  and (c)  there  are no  strikes,
slowdowns,  work stoppages or controversies pending or, to the best knowledge of
any Loan Party  after due  inquiry,  threatened  between  any Loan Party and its
respective  employees,  other than employee  grievances  arising in the ordinary
course of business  which  could not  reasonably  be  expected  to have,  either
individually or in the aggregate, a Material Adverse Effect. Except as set forth
on Schedule 4.22, no Loan Party is subject to an employment contract.

     4.23 Governmental Regulation.  None of the Loan Parties is, or after giving
effect to any loan will be,  subject  to  regulation  under the  Public  Utility
Holding Company Act of 1935, the Federal Power Act or the Investment Company Act
of 1940 or to any federal or state statute or regulation limiting its ability to
incur indebtedness for borrowed money.

     4.24 Real  Property.  On the date hereof,  none of the Loan Parties owns or
has any option to acquire any real  property,  including  land or buildings,  or
leases any real property under a lease or other  agreement with a term exceeding
five years except as disclosed in Schedule 4.24.

                        SECTION 5. AFFIRMATIVE COVENANTS

Each of Systems,  the  Borrowers and the other  Guarantors  covenants and agrees
that, so long as the Commitment  hereunder  shall be in effect and until payment
in full of all  Obligations  and  termination  of all Lender  Letters of Credit,
unless Lender shall otherwise give its prior written  consent,  each of Systems,
the Borrowers and the other  Guarantors  shall perform,  and shall cause each of
its Subsidiaries to perform,  all covenants in this Section 5 applicable to such
Person or Persons.

     5.1 Financial  Statements  and Other  Reports.  Systems,  Borrowers and the
other Guarantors will maintain, and cause each of their respective  Subsidiaries
to maintain,  a system of accounting  established and administered in accordance
with sound business practices to permit  preparation of financial  statements in
conformity with GAAP.  Borrowers will deliver or cause to be delivered to Lender
the financial statements and other reports described below.

          (A) Monthly Financials.  As soon as available, and in any event within
thirty (30) days after the end of each  month,  Borrowers  will  deliver (1) the
consolidated  and  consolidating  balance sheet of Systems,  Borrowers and their
respective Subsidiaries as at the end of such month and the related consolidated
and consolidating statements of income and statement of cash flow for such month
and for the period from the beginning of the then current Fiscal Year to the end
of such month,  and (2) a schedule of the outstanding  Indebtedness of each Loan
Party  describing in reasonable  detail each such debt issue or loan outstanding
and the principal  amount and amount of accrued and unpaid interest with respect
to each such debt issue or loan.


          (B) Quarterly  Financials,  etc. (i) As soon as available,  and in any
event before the earlier of the date one (1) Business  Day after  Systems  files
its quarterly  report on Form 10-Q with the Securities  and Exchange  Commission
for each of its first  three  Fiscal  Quarters  in each Fiscal Year and the date
forty-five  (45)  days  after the end of such  Fiscal  Quarter,  Borrowers  will
deliver, or will cause to be delivered,  to Lender, such report; (ii) in respect
of the fourth Fiscal  Quarter in each Fiscal Year, as soon as available,  and in
any event  within  forty-five  (45) days after the end of such  Fiscal  Quarter,
Borrowers  will deliver to Lender  financial  statements  that are equivalent in
format to the financial  statements that would have been included in a quarterly
report on Form 10-Q made by Systems for such  Fiscal  Quarter and (iii) in order
to  permit  the  Lender  to  comply  with its  obligations  under  the  EximBank
Documents,  Power shall  deliver to the Lender within thirty (30) days after the
end of each  Fiscal  Quarter a sampling  selected  by the Lender of copies of at
least 10% of all written export orders or contracts  which gave rise to Eligible
Accounts during the preceding Fiscal Quarter.

          (C) Year-End  Financials.  As soon as available,  and in any event not
later than  ninety  (90) days after the end of each  Fiscal Year or, if earlier,
the  date on which  Systems  files  its  annual  report  on Form  10-K  with the
Securities  and Exchange  Commission  in respect of such Fiscal Year,  Borrowers
will deliver: (1) the consolidated balance sheet of Systems, Borrowers and their
respective  Subsidiaries as at the end of such year and the related consolidated
statements of income,  stockholders'  equity and cash flow for such Fiscal Year;
(2) a schedule of the outstanding  Indebtedness of Systems,  Borrowers and their
respective  Subsidiaries describing in reasonable detail each such debt issue or
loan  outstanding  and the  principal  amount and  amount of accrued  and unpaid
interest with respect to each such debt issue or loan; (3) a report with respect
to the  financial  statements  from  a  firm  of  independent  certified  public
accountants  selected by Systems and Borrowers and  acceptable to Lender,  which
report shall be unqualified and shall state that (a) such consolidated financial
statements  present  fairly the  consolidated  financial  position  of  Systems,
Borrowers and their  respective  Subsidiaries  as at the dates indicated and the
results  of  their  operations  and  cash  flow  for the  periods  indicated  in
conformity  with  GAAP and (b)  that  the  examination  by such  accountants  in
connection  with  such  consolidated  financial  statements  has  been  made  in
accordance with generally  accepted  auditing  standards;  and (4) copies of the
consolidating  financial  statements of Systems,  Borrowers and their respective
Subsidiaries,  including (a) consolidating  balance sheets of Systems,  Borrower
and their  respective  Subsidiaries  as at the end of such Fiscal  Year  showing
intercompany  eliminations and (b) related consolidating  statements of earnings
of Systems,  Borrowers and their respective  Subsidiaries  showing  intercompany
eliminations.

          (D)  Accountants'   Certification  and  Reports.  Together  with  each
delivery of consolidated  financial  statements of Systems,  Borrowers and their
respective  Subsidiaries  pursuant to subsection 5.1(C),  Borrowers will deliver
(1) a written  statement by their independent  certified public  accountants (a)
stating  that  the  examination  has  included  a  review  of the  terms of this
Agreement  as same relate to  accounting  matters and (b)  stating  whether,  in
connection  with the  examination,  any  condition or event that  constitutes  a
Default  or an Event of  Default  has come to  their  attention  and,  if such a
condition or event has come to their attention, specifying the nature and period
of existence  thereof and (2) a copy of a letter  addressed to such  accountants
from Systems  informing  such  accountants  that a primary intent of Systems and
Borrowers was to have the  professional  services such  accountants  provided to
Systems and Borrowers in preparing their audit report and the letter referred to
in this subsection 5.1(D) benefit or influence Lender and identifying  Lender as
a party  that  Systems  and  Borrowers  have  indicated  intend  to rely on such
professional  services  provided to Systems and  Borrowers by such  accountants.
Promptly upon receipt thereof,  Systems and Borrowers will deliver copies of all
significant  reports  submitted to Systems and Borrowers by  independent  public
accountants  in  connection  with each annual,  interim or special  audit of the
financial statements of Systems, Borrowers or their respective Subsidiaries made
by such accountants,  including the comment letter submitted by such accountants
to management in connection with their annual audit.

          (E) Compliance Certificate.  Together with the delivery of each set of
financial statements  referenced in subparts (A), (B) and (C) of this subsection
5.1, Borrowers will deliver a Compliance  Certificate,  together with (i) copies
of the calculations  and work-up  employed to determine  Systems' and Borrowers'
compliance or noncompliance with the financial  covenants set forth in Section 6
and  subsection  7.1  and  (ii)  a  report  showing  in  reasonable  detail  the
calculation of the Applicable  Base Rate Margin and the Applicable  LIBOR Margin
as at the effective date of such financial  statements (the  "Applicable  Margin
Report").

          (F) Borrowing Base Certificates,  Registers and Journals. On or before
the fifth Business Day of each month from and after the Closing Date (or on each
Business Day if requested by Lender  following  the  occurrence  of any Event of
Default or when Unused  Availability  is less than  $2,000,000 or when Lender in
its  reasonable  discretion  requires  such reports on a daily basis)  Borrowers
shall deliver to Lender:  (1) a separate Borrowing Base Certificate with respect
to each  Borrower  updated to reflect the most recent sales and  collections  of
each  Borrower  through the  immediately  preceding  month (or, if  requested by
Lender on a daily basis pursuant hereto, on the immediately  preceding  Business
Day) and (2) a schedule of all  Accounts  created or  acquired by each  Borrower
during such month or, if applicable,  on such day, together with a summary aging
of all such Accounts detailing amounts due from each account debtor.  Within ten
(10)  Business  Days after the end of each  month,  Borrowers  shall  deliver to
Lender (a) an invoice  register or sales  journal  describing  all sales of each
Borrower  for such  month,  in form and  substance  reasonably  satisfactory  to
Lender, and, if Lender so requests, copies of invoices evidencing such sales and
proofs of delivery relating thereto, (b) a cash receipts journal for such month,
(c) a schedule of each customer which is owed a credit or other amount in excess
of $25,000  (which  amount  shall be  deducted  by Lender as a reserve  from the
Borrowing  Base) by any  Borrower and listing each such amount and (d) a summary
inventory report by category as of the end of such month.

          (G)  Reconciliation  Reports and Listings and Agings.  Within ten (10)
Business  Days  after the last day of each  month and from time to time upon the
request of Lender,  Borrowers shall deliver to Lender: (i) an aged trial balance
of all then existing Accounts of each Borrower; (2) an aged trial balance of all
then existing accounts payable of each Borrower; and (3) a Reconciliation Report
as at the  last  day of such  period.  All  such  reports  shall  be in form and
substance reasonably satisfactory to Lender.

          (H)  Management  Report.  Together  with each  delivery  of  financial
statements of Systems,  Borrowers and their respective  Subsidiaries pursuant to
subdivisions  (A) (on a quarterly  basis only),  and (B) of this subsection 5.1,
Borrowers  shall  deliver a copy of the complete  management's  discussions  and
analysis of financial  condition and results of operations  included in Systems'
Form 10-K or Form 10-Q, as  applicable,  filed with the  Securities and Exchange
Commission for the period covered by such financial  statements.  Such financial
statements shall be presented in reasonable detail and shall be certified by the
chief  financial  officer of Systems  and each  Borrower to the effect that such
information fairly presents the results of operations and financial condition of
Systems,  the  Borrowers  and  their  Subsidiaries  as at the  dates and for the
periods indicated.

          (I) Government Notices.  The Borrowers shall cause all Loan Parties to
deliver  to Lender  promptly  after  receipt  copies of all  notices,  requests,
subpoenas,  inquiries or other writings  received from any  governmental  agency
concerning any Employee Benefit Plan, the violation or alleged  violation of any
Environmental Laws, the storage, use or disposal of any Hazardous Material,  the
violation or alleged violation of the Fair Labor Standards Act or a Loan Party's
payment  or  non-payment  of any taxes  including  any tax  audit if the  matter
referred to therein,  if  adversely  determined,  could have a Material  Adverse
Effect or result in any Lien on any assets of a Loan Party.

          (J) Events of Default,  etc.  Promptly  upon (but in any event  within
five (5) Business Days after) any officer of any Loan Party obtaining  knowledge
of any of the following  events or  conditions,  the Borrowers and Systems shall
deliver a certificate of the chief executive officer, chief financial officer or
other officer of Systems having  responsibility  for finance matters  specifying
the nature and period of  existence  of such  condition or event and what action
such Loan Party has taken, is taking and proposes to take with respect  thereto:
(1) any condition or event that constitutes an Event of Default or Default;  (2)
any notice of  default  that any Person has given to any Loan Party or any other
action taken with  respect to a claimed  default;  or (3) any  Material  Adverse
Effect.

          (K) Trade Names.  Borrowers will give Lender at least thirty (30) days
advance  written  notice  of any  change  of name or of any  new  trade  name or
fictitious business name by any Loan Party or any of its Subsidiaries. Each Loan
Party's use of any trade name or fictitious  business name will be in compliance
with all laws regarding the use of such names.

          (L)  Locations.  Borrowers  will give Lender at least thirty (30) days
advance  written  notice of any change in any Loan  Party's  principal  place of
business  or any  change  in  the  location  of its  books  and  records  or the
Collateral or of any new location for its books and records or the Collateral.

          (M) Bank Accounts.  Loan Parties will give Lender prompt notice of any
new bank accounts any Loan Party intends to establish prior to its opening same.

          (N)  Litigation.  Promptly  upon  (but in any  event  within  five (5)
Business  Days after) any officer of any Loan Party  obtaining  knowledge of (1)
the institution of any action, suit, proceeding,  governmental  investigation or
arbitration  against or  affecting  any Loan Party or any  property  of any Loan
Party not  previously  disclosed by a Loan Party to Lender  which,  if adversely
determined, could have a Material Adverse Effect or (2) any material development
in any action, suit,  proceeding,  governmental  investigation or arbitration at
any time pending against or affecting any Loan Party or any property of any Loan
Party which could  reasonably  be  expected to have a Material  Adverse  Effect,
Borrowers  will  promptly  give notice  thereof to Lender and provide such other
information  as may be  reasonably  available  to them to enable  Lender and its
counsel to evaluate such matter.

          (O)  Projections.  As soon as available and in any event no later than
the end of each Fiscal  Year of  Systems,  Borrowers  will  deliver  preliminary
Projections  of Systems,  Borrowers and their  respective  Subsidiaries  for the
forthcoming  three Fiscal Years,  year by year, and for the  forthcoming  Fiscal
Year, month by month,  and shall deliver the final  Projections for such periods
as soon as  available  and in any event no later than January 31 in the first of
such three Fiscal Years.

          (P) Other  Indebtedness  Notices.  Borrowers  shall  promptly  deliver
copies of all notices  given or  received  by (but in any event  within five (5)
Business Days after  receipt from) any Loan Party with respect to  noncompliance
with any term or condition (1) related to any Indebtedness in excess of $250,000
either  individually or in the aggregate or (2) of any EximBank  Documents,  and
shall  promptly  notify  Lender of any potential or actual event of default with
respect to any such Indebtedness or EximBank Documents or agreements.

          (Q) Other  Information.  With  reasonable  promptness,  Borrowers will
deliver  such other  information,  reports,  contracts,  invoices  and data with
respect to any Loan Party or the  Collateral  as Lender may  reasonably  request
from time to time.

          (R)  Opening  Balance  Sheet.  As soon as  available  and in any event
within  ninety  (90) days  after the  Closing  Date,  Borrowers  will  deliver a
consolidated and  consolidating  balance sheet as of May 31, 1999,  certified by
the chief  financial  officer of Systems and each Borrower as fairly  presenting
the consolidated and consolidating financial condition of Systems, Borrowers and
their   Subsidiaries  in  accordance  with  GAAP,   subject  to  year-end  audit
adjustments.

          (S) Public Filings.  Within five (5) Business Days after the filing or
release thereof,  Systems and Borrowers will deliver a copy of each registration
statement  (and  amendment  and  supplement  thereto),  report,  press  release,
prospectus,  proxy  statement  or  other  filing  or  disclosure  made  with any
securities  commission,  exchange or  association or under the Securities Act of
1933,  the  Securities  Exchange Act of 1934, any related laws or regulations or
any comparable state acts, laws or regulations relating to any of them or any of
their respective Subsidiaries.

     5.2  Access  to  Accountants  and  Management.  Systems  and the  Borrowers
authorize Lender to discuss the financial condition and financial  statements of
any Loan  Party  with such Loan  Party's  independent  public  accountants  upon
reasonable  notice to Borrower  Representative  of its  intention  to do so, and
authorizes such accountants to respond to all of Lender's inquiries.  Lender may
confer with any officers of each Loan Party directly regarding such Loan Party's
business, operations and financial condition.

     5.3  Inspection.  Systems and the  Borrowers  shall  permit  Lender and any
authorized  representatives designated by Lender to visit and inspect any of the
properties  of any  Loan  Party  or any of  its  Subsidiaries,  including  their
financial and accounting  records,  and in conjunction with such inspection,  to
make copies and take extracts therefrom, and to discuss their affairs,  finances
and business with their officers and  independent  public  accountants,  at such
reasonable  times during normal business hours and as often as may be reasonably
requested.  Without limiting the foregoing,  a field audit shall be permitted at
least once every six months  for the  purposes  set forth in Section  4.4 of the
MGA.

     5.4 Collateral  Records.  The Borrowers and Guarantors  shall keep full and
accurate books and records  relating to the Collateral and shall mark such books
and records to indicate Lender's security interests in the Collateral.

     5.5 Account  Covenants;  Verification.  Borrowers shall and shall cause the
Guarantors  to, at their own  expense:  (a) at any time upon the  request of the
Lender,  cause all invoices evidencing Accounts and all copies thereof to bear a
notice that such invoices are payable to the lockboxes established in accordance
with  subsection  5.6 or otherwise  notify all account  debtors to make payments
under all present and future  Accounts to such  lockboxes and (b) use their best
efforts to assure  prompt  payment of all amounts due or to become due under the
Accounts. Discounts, credits or allowances will be issued, granted or allowed by
any Borrower to customers and returns will be accepted solely in accordance with
the  ordinary  course  of such  Borrower's  business  and  consistent  with past
practices,  provided that, upon written notice to such effect given by Lender at
any time during the  existence  of any Event of  Default,  such  practice  shall
cease.  Borrowers  will  immediately  notify Lender in the event that a customer
alleges any dispute or claim with respect to an Account if the amount in dispute
is, or the claim  involves  an  amount,  in  excess of  $10,000  or of any other
circumstances   known  to  any   Borrower   that  may  impair  the  validity  or
collectibility  of such an amount in respect of any  Account.  Lender shall have
the right, at any time or times hereafter, to verify the validity, amount or any
other matter relating to an Account, by mail,  telephone or in person. After the
occurrence of a Default or an Event of Default, Borrowers shall not, without the
prior consent of Lender,  adjust,  settle or compromise the amount or payment of
any Account,  or release  wholly or partly any customer or obligor  thereof,  or
allow any credit or discount thereon.

     5.6  Collection of Accounts and  Payments;  Cash  Management  Arrangements.
Prior to the Closing Date,  Borrowers  shall, and shall cause the Guarantors to,
establish lockboxes and blocked accounts  (collectively,  "Blocked Accounts") in
Borrowers' or such Guarantor's names with such banks ("Collecting Banks") as are
acceptable to Lender (subject to irrevocable  instructions  acceptable to Lender
as  hereinafter  set forth and  contained in  agreements  in form and  substance
acceptable  to Lender among the  applicable  Borrowers or such  Guarantor's  and
Collecting Banks and Lender  ("Blocked  Account  Agreements"))  to which,  after
notice from the Lender to the Borrower Representative, all account debtors shall
directly  remit all payments on Accounts and in which,  at all times both before
and after such notice from the Lender to the Borrower Representative,  Borrowers
and Guarantors will immediately deposit all payments  constituting  payments for
Inventory or Accounts or other  proceeds of Collateral in the identical  form in
which such  payment was made,  whether by cash or check.  The  Collecting  Banks
shall  acknowledge  and agree,  in a manner  satisfactory  to  Lender,  that all
payments  made to the Blocked  Accounts are the sole and  exclusive  property of
Lender,  and that the  Collecting  Banks  have no right of  setoff  against  the
Blocked  Accounts  and  that  all  such  payments   received  will  be  promptly
transferred to Lender's Account.  Borrowers and Guarantors hereby agree that all
payments received by Lender,  whether by cash, check, wire transfer or any other
instrument,  made to such Blocked  Accounts or otherwise  received by Lender and
whether on the Accounts or as proceeds of other  Collateral or otherwise will be
the sole and  exclusive  property  of Lender.  Borrowers  and  Guarantors  shall
irrevocably  instruct each Collecting Bank  immediately to transfer all payments
or  deposits  to the Blocked  Accounts  into  Lender's  Account.  Borrowers  and
Guarantors  and any of their  Affiliates,  employees,  agents  or other  Persons
acting  for or in concert  with any  Borrower  or  Guarantor,  shall,  acting as
trustee for Lender,  receive,  as the sole and exclusive property of Lender, any
monies,  checks, notes, drafts or any other payments relating to and/or proceeds
of  Accounts or other  Collateral  which come into the  possession  or under the
control of any  Borrower  or  Guarantor  or any of such  Affiliates,  employees,
agents or other Persons acting for or in concert with any Borrower or Guarantor,
and immediately upon receipt thereof,  Borrowers or such Persons shall remit the
same or cause the same to be remitted, in kind, to the Blocked Accounts or, upon
written direction from Lender, to Lender at its address set forth in
subsection 10.4 below.

     5.7 Endorsement.  Each Borrower and each Guarantor  hereby  constitutes and
appoints  Lender and all Persons  designated  by Lender for that purpose as such
Borrower's or Guarantor's (as the case may be) true and lawful attorney-in-fact,
with  power to  endorse  its name to any of the  items of  payment  or  proceeds
described in subsection 5.6 above and all proceeds of Collateral  that come into
Lender's possession or under Lender's control. Both the appointment of Lender as
such Borrower's or Guarantor's (as the case may be) attorney and Lender's rights
and powers are coupled with an interest  and are  irrevocable  until  payment in
full and complete performance of all of the Obligations.

     5.8 Corporate  Existence.  Except as permitted  pursuant to subsection 7.6,
Systems,  each Borrower and each Guarantor  shall, and shall cause each of their
respective  Subsidiaries  to, at all times  preserve  and keep in full force and
effect its  corporate  existence and all rights and  franchises  material to its
business. Systems and each Borrower will promptly notify Lender of any change in
its or their respective Subsidiaries' ownership or corporate structure.

     5.9 Payment of Taxes. Systems and the Borrowers shall, and shall cause each
other Loan Party to, pay all taxes,  assessments and other governmental  charges
imposed upon it or any of its properties or assets or with respect to any of its
franchises,  business,  income or property before any penalty  accrues  thereon;
provided,  however,  that no such  tax  need be  paid  if  such  Loan  Party  is
contesting same in good faith by appropriate proceedings promptly instituted and
diligently conducted and if such Loan Party has established appropriate reserves
as shall be required in conformity with GAAP.

     5.10 Maintenance of Properties;  Insurance. Systems and the Borrowers shall
and shall cause each other Loan Party to maintain or cause to be maintained  (A)
in good repair,  working order and condition all material properties used in the
business  of any Loan  Party and will  make or cause to be made all  appropriate
repairs,  renewals and replacements  thereof and (B) with financially  sound and
reputable insurers, public liability insurance,  workers compensation,  employee
benefit  liability   insurance,   fidelity  insurance,   business   interruption
insurance,  errors and omissions  insurance,  directors' and officers' liability
insurance,  and  property  damage  insurance  with  respect to each Loan Party's
business and properties against loss or damage of the kinds customarily  carried
or maintained  by  corporations  of  established  reputation  engaged in similar
businesses  and in amounts  reasonably  acceptable to Lender.  Each Borrower and
each  Guarantor  shall cause  Lender to be named as loss payee on all  insurance
policies  relating  to  any  Collateral  and as  additional  insured  under  all
liability  policies of all Loan Parties,  in each case  pursuant to  appropriate
endorsements  in form and  substance  satisfactory  to  Lender  and each of them
hereby  collaterally  assigns  to  Lender as  security  for the  payment  of the
Obligations all such insurance. The Borrowers and the Guarantors shall apply any
proceeds  received from any policies of insurance  relating to any Collateral to
the Obligations as set forth in subsection  2.4(B). The Borrowers will, and will
cause each other Loan Party to, deliver to Lender, within ten (10) Business Days
prior  to  the  expiration  or  termination  of any  such  insurance  policy,  a
certificate of renewal or replacement of such insurance policy, as issued by the
applicable insurance company or its duly authorized agent.

     5.11 Compliance with Laws.  Systems and the Borrowers shall and shall cause
each other Loan Party to, comply with the  requirements of all applicable  laws,
rules, regulations and orders of any governmental authority as now in effect and
which may be imposed  in the future in all  jurisdictions  in which  Systems,  a
Borrower,  or any other Loan Party is now doing  business  or may  hereafter  be
doing  business,  other than those laws the  noncompliance  with which would not
have a Material Adverse Effect.

     5.12 Further Assurances.

     (A) Systems and the Borrowers  shall, and shall cause each other Loan Party
to,  from time to time,  execute  such  guaranties,  financing  or  continuation
statements,  documents,  security  agreements,  reports and other  documents  or
deliver to Lender such instruments,  certificates of title or other documents as
Lender at any time may  reasonably  request to  evidence,  perfect or  otherwise
implement the guaranties and security for repayment of the Obligations  provided
for in the Loan Documents.

     (B) At Lender's  request,  each Loan Party shall cause any newly created or
acquired Subsidiary of a Borrower or a Loan Party which is a Domestic Subsidiary
promptly to become a Borrower and/or Guarantor  hereunder and to grant to Lender
security  interests in the real,  personal and mixed property of such Subsidiary
to secure the Obligations.

     (C) Each Loan Party shall  notify  Lender prior to acquiring or leasing any
real property,  including land or buildings,  and shall execute and deliver such
mortgages  in favor of Lender and other  documents  as Lender  shall  request to
grant a first  priority  security  interest  and  mortgage,  as security for the
Obligations.  This subsection 5.12(C) shall not apply to leases with a term less
than five years under which the annual rent obligations are less than $100,000.


     (D) In the event that any  Subsidiary  which is not a  Domestic  Subsidiary
shall at any time have  Tangible  Net Worth or  EBITDA  for any two  consecutive
fiscal  quarters   (determined   for  such   Subsidiary  and  its   consolidated
Subsidiaries) which exceeds 5% of the consolidated  Tangible Net Worth or EBITDA
for such two  consecutive  fiscal  quarters of Systems,  the Borrowers and their
Subsidiaries,  the  Borrowers  shall  promptly  (and in any event within 45 days
after the end of the Fiscal  Quarter in which such  circumstance  occurs) notify
the Lender,  and deliver to the Lender  within 30 days  thereafter an opinion of
counsel in form and substance  satisfactory to Lender from a recognized law firm
in the jurisdiction where such non-Domestic Subsidiary is organized relating to,
among other things,  the due organization and existence of such Subsidiary,  the
valid issuance of its securities held by the Borrowers  and/or  Guarantors,  the
valid and  perfected  first  priority  pledge of such  securities  pursuant to a
Pledge  Agreement and the adequacy of the rights and remedies  contained in such
Pledge  Agreement.  If such  opinion  is not  satisfactory  to the Lender in all
respects,  the  Borrowers  and/or  Guarantors  shall  execute and deliver to the
Lender such  agreements,  instruments and documents as the Lender may request in
its  sole  discretion  to  more  effectively   pledge  the  securities  of  such
Subsidiary.  Notwithstanding the foregoing, Systems and Borrowers shall take all
of the  foregoing  actions with  respect to GSE Power  Systems AB within 30 days
after the Closing Date.

     5.13  Collateral  Locations.  Each  Borrower  and  Guarantor  will keep the
Collateral at the  locations  specified on Schedule 4.7. With respect to any new
location  (which in any event shall be within the  continental  United  States),
each Borrower and Guarantor will execute such documents and take such actions as
Lender deems  necessary to perfect and protect the security  interests of Lender
in the Collateral  prior to the delivery,  transfer or removal of any Collateral
to such new location.

     5.14 Instruments;  Chattel Paper,  etc.. Except to the extent  Indebtedness
evidenced  thereby  does  not  exceed  $50,000  outstanding  at any  time in the
aggregate, each Borrower and Guarantor will (A) deliver and pledge to Lender all
notes and  instruments  (as defined in the UCC) duly endorsed and accompanied by
duly executed  instruments of transfer or assignment,  all in form and substance
satisfactory to Lender,  and all letters of credit,  and (B) mark  conspicuously
all chattel paper with a legend,  in form and substance  satisfactory to Lender,
indicating  that such  chattel  paper is subject  to the  security  interest  of
Lender.

     5.15 Use of Proceeds and Margin Security.  Borrowers shall use the proceeds
of all Loans and all Lender Letters of Credit for proper  business  purposes (as
described  in the  recitals to this  Agreement  but  subject to any  limitations
contained  in the  EximBank  Documents)  consistent  with all  applicable  laws,
statutes, rules and regulations. No portion of the proceeds of any Loan shall be
used by any  Borrower or any other Loan Party for the purpose of  purchasing  or
carrying  margin stock within the meaning of Regulation G or Regulation U, or in
any manner that might cause the borrowing,  the application of such proceeds, or
the transactions  contemplated  hereby or by the other Loan Documents to violate
Regulation T or  Regulation X or any other  regulation of the Board of Governors
of the Federal Reserve System or to violate the Securities  Exchange Act of 1934
or the rules and regulations thereunder.


                         SECTION 6. FINANCIAL COVENANTS

     Each of Systems, the Borrowers and the Guarantors covenants and agrees that
so long as the  Commitment  remains in effect  and until  payment in full of all
Obligations  and termination of all Lender Letters of Credit,  unless  Borrowers
have received the prior written  consent of Lender,  Systems,  each Borrower and
each  Guarantor  shall  comply  with,  and shall cause each of their  respective
Subsidiaries to comply with, all covenants in this Section 6.

     6.1 Minimum EBITDA.  Systems,  Borrowers and their respective  consolidated
Subsidiaries  shall maintain,  on a consolidated  basis,  EBITDA for each of the
periods  specified  below in at least the amount set forth below  opposite  each
period:


     Period                                                    Minimum EBITDA
     ------                                                    --------------
                                                         

Four Fiscal Quarters Ending:

          March 31, 1999                                       $4,350,000

          June 30, 1999                                        $5,000,000

          September 30, 1999                                   $5,650,000

          December 31, 1999                                    $6,300,000

          March 31, 2000                                       $6,475,000

          June 30, 2000                                        $6,645,000

          September 30, 2000                                   $6,800,000

          December 31, 2000 and each                           $6,950,000
          Subsequent Fiscal Quarter end.



     6.2 Fixed Charge  Coverage.  (A) Systems and Borrowers and their respective
consolidated  Subsidiaries  shall not permit their Fixed Charge  Coverage,  on a
consolidated  basis,  to be less  than 1.2 to 1.0 for the four  Fiscal  Quarters
ending March 31, 1999, 1.4 to 1.0 for the four Fiscal  Quarters  ending June 30,
1999, 1.6 to 1 for the four Fiscal Quarters ending September 30, 1999, or 1.8 to
1 for the four Fiscal  Quarters  ending  December 31, 1999 or on the last day of
any Fiscal Quarter thereafter.

     (B) Each Borrower and its consolidated  Subsidiaries shall not permit their
respective  Fixed  Charge  Coverage  to be less than the ratios set forth  under
their names below for any period set forth below:




Period                              Power                   Process
- ------                              -----                   -------
                                                     

Four Fiscal Quarters ending:

     March 31, 1999                 1.8                       1.85

     June 30, 1999                  1.8                       1.90

     September 30, 1999             1.8                       1.95

     December 31, 2000              1.8                       2.0
     and each subsequent
     Fiscal Quarter end.



     6.3  Tangible  Net  Worth.  Systems  and  Borrowers  and  their  respective
consolidated  Subsidiaries  shall maintain at all times on a consolidated  basis
Tangible Net Worth during each Fiscal Year equal to or greater than the Tangible
Net Worth as of the end of the immediately  preceding Fiscal Year, provided that
on  the  last  day of  each  Fiscal  Year  beginning  December  31,  1999,  such
consolidated  Tangible Net Worth shall be at least  $1,000,000  higher than such
consolidated  Tangible Net Worth as of the last day of the immediately preceding
Fiscal Year.

     6.4 EximBank  Tangible Net Worth.  Power and its consolidated  Subsidiaries
shall maintain at all times on a consolidated  basis EximBank Tangible Net Worth
equal to or greater than $7,500,000.

     6.5 Leverage. Power and its consolidated  Subsidiaries shall not permit the
ratio of  Liabilities  to EximBank  Tangible Net Worth (both as  determined on a
consolidated bases) at any time to exceed 4 to 1.

                         SECTION 7. NEGATIVE COVENANTS

     Each of Systems, the Borrowers and the Guarantors covenants and agrees that
so long as the  Commitment  remains in effect  and until  payment in full of all
Obligations  and termination of all Lender Letters of Credit,  unless  Borrowers
have received the prior written  consent of Lender,  Systems,  each Borrower and
each  Guarantor  shall  not,  and  shall  not  permit  any of  their  respective
Subsidiaries to:

     7.1  Indebtedness and Liabilities.  Directly or indirectly  create,  incur,
assume,  guaranty,  or otherwise become or remain directly or indirectly liable,
on a fixed or contingent basis, with respect to any Indebtedness except: (a) the
Obligations;  (b) Intercompany  Indebtedness  among Borrowers and Guarantors but
only to the extent not prohibited under the EximBank Documents; (c) Indebtedness
(excluding  Capital  Leases) not to exceed (in the aggregate  with  Indebtedness
permitted under clause (d) of this Section 7.1) $400,000 in the aggregate at any
time outstanding secured by purchase money Liens; (d) Indebtedness under Capital
Leases not to exceed (in the aggregate with Indebtedness  permitted under clause
(c) of this Section 7.1) $400,000 outstanding at any time in the aggregate;  and
(e) Indebtedness existing on the Closing Date and identified on Schedule 4.4 and
Indebtedness  arising  after the Closing  Date and  described in Schedule 4.4 as
future  permitted  Indebtedness.   Except  for  Indebtedness  permitted  in  the
preceding  sentence,  Systems,  Borrowers and Guarantors  will not, and will not
permit any of their  Subsidiaries  to,  incur any  Liabilities  except for trade
payables and normal  accruals in the ordinary course of business not yet due and
payable  or with  respect to which any  Borrower,  any  Guarantor  or any of its
Subsidiaries  is  contesting  in good  faith the amount or  validity  thereof by
appropriate proceedings and then only to the extent such Borrower,  Guarantor or
any  of  its  Subsidiaries  has  established  adequate  reserves  therefor,   if
appropriate under GAAP.


     7.2 Guaranties.  Except for (a) the guaranties of the Obligations  provided
hereunder and under the other Loan Documents,  (b) performance  guaranties given
by a  Borrower  or  Guarantor  in respect of a  Borrower's  performance  under a
contract which performance by a Borrower is reasonably contemplated to result in
Eligible   Accounts,   (c)  obligations   described  in  Schedule  4.4  and  (d)
endorsements  of  instruments or items of payment for collection in the ordinary
course of  business,  guaranty,  endorse,  or  otherwise in any way become or be
responsible  for any  obligations  of any  other  Person,  whether  directly  or
indirectly,  including by agreement  to purchase the  indebtedness  of any other
Person or through the purchase of goods, supplies or services, or maintenance of
working  capital or other balance sheet  covenants or  conditions,  or by way of
stock purchase, capital contribution,  advance or loan for the purpose of paying
or discharging any indebtedness or obligation of such other Person or otherwise.

     7.3 Transfers, Liens and Related Matters.

          (A)  Transfers.  Sell,  assign (by  operation of law or  otherwise) or
otherwise  dispose of, or grant any option with respect to any of the Collateral
or the  assets of such  Person,  except  that  Borrowers,  Guarantors  and their
Subsidiaries may (i) sell inventory in the ordinary course of business; and (ii)
make Asset  Dispositions  if all of the  following  conditions  are met: (1) the
market value of assets sold or otherwise  disposed of in any single  transaction
or series of related  transactions  does not exceed  $200,000 and the  aggregate
market value of assets sold or otherwise disposed of in any Fiscal Year does not
exceed $400,000;  (2) the  consideration  received is at least equal to the fair
market value of such assets,  as  determined  in good faith by such  Borrower's,
Guarantor's or Subsidiary's senior officers; (3) the sole consideration received
is cash or notes as to which a Borrower or Guarantor  shall have  delivered such
notes to Lender and  complied  with Section  5.14;  (4) the net proceeds of such
Asset Disposition are applied as required by subsection 2.4(B); (5) after giving
effect to the sale or other  disposition of the assets included within the Asset
Disposition  and the  repayment of the  Obligations  with the proceeds  thereof,
Systems and  Borrowers are in compliance on a pro forma basis with the covenants
set forth in Section 6 recomputed  for the most  recently  ended month for which
information  is  available  and are in  compliance  with  all  other  terms  and
conditions  contained in this Agreement;  and (6) no Default or Event of Default
shall then exist or result from such sale or other disposition.

          (B)  Liens.  Except for  Permitted  Encumbrances,  Liens on  equipment
described  in  Schedule  4.4 and  Liens  on up to  $800,000  of cash  collateral
securing  letters of credit  issued by First Union  National  Bank,  directly or
indirectly create,  incur, assume or permit to exist any Lien on or with respect
to any of the Collateral or the assets of such Person or any proceeds, income or
profits therefrom, whether now owned or hereafter acquired.

          (C) No Negative  Pledges.  Enter into or assume any  agreement  (other
than the Loan Documents) prohibiting the creation or assumption of any Lien upon
its properties or assets, whether now owned or hereafter acquired.


          (D) No  Restrictions  on  Distributions.  Except as  provided  herein,
directly or  indirectly  create or otherwise  cause or suffer to exist or become
effective any  consensual  encumbrance or restriction of any kind on the ability
of any Borrower,  any  Guarantor or any  Subsidiary of any Borrower or Guarantor
to: (1) pay dividends or make any other distribution on any of such Subsidiary's
capital stock or other equity owned by a Borrower, a Guarantor or any Subsidiary
of such Borrower or Guarantor;  (2) pay any indebtedness owed to any Loan Party;
(3) make  loans  or  advances  to any Loan  Party;  or (4)  transfer  any of its
property or assets to any Loan Party.

     7.4 Investments and Loans.  Make or permit to exist investments of any type
in or  loans  or  advances  to  any  other  Person  or  commit  to do any of the
foregoing, except: (a) Cash Equivalents; (b) loans and advances to employees for
moving, entertainment,  travel and other similar expenses in the ordinary course
of business in an aggregate  outstanding  amount not in excess of $75,000 to any
one employee and $300,000 in the  aggregate  for all  employees at any time with
respect to all the Loan Parties; (c) Intercompany  Indebtedness  permitted under
subsection 7.1; (d) Permitted  Acquisitions  permitted under subsection  7.6(B);
and (e)  investments  existing  on the  date of this  Agreement  in  other  Loan
Parties.

     7.5 Restricted Junior Payments. Directly or indirectly declare, order, pay,
make or set apart any sum for any  Restricted  Junior  Payment,  except that, so
long as no Default or Event of Default  shall have occurred and be continuing or
would result  therefrom  (other than in the case of Restricted  Junior  Payments
made pursuant to clause (i) below, which may be made whether or not a Default or
Event  of  Default  shall  have  occurred  and is  continuing  or  would  result
therefrom),  (A) a Borrower or any Subsidiary of a Borrower may make  Restricted
Junior Payments with respect to its common stock to the extent  necessary (i) to
permit Borrowers to pay (or deposit cash collateral for) the  Obligations;  (ii)
to permit Systems to make payments in cash in respect of Corporate Overhead; and
(iii) to permit any Borrower to pay expenses  incurred in the ordinary course of
business;  and (B) Systems may make  Restricted  Junior Payments with respect to
its  common  stock not  earlier  than 30 days  after or later than 90 days after
delivery of the financial statements referred to in subsection 5.1(C).

     7.6 Restriction on Fundamental Changes.


          (A)(i) Enter into any  transaction  of merger or  consolidation;  (ii)
liquidate,   wind-up  or  dissolve   itself  (or  suffer  any   liquidation   or
dissolution);  or (iii) convey,  sell,  lease,  sublease,  transfer or otherwise
dispose  of,  in  one  transaction  or a  series  of  transactions,  all  or any
substantial  part of its business or assets,  or the capital stock of any of its
Subsidiaries,  whether now owned or hereafter acquired;  provided, however, that
so long as no Event of Default  then exists or would  result  therefrom  (x) any
Borrower or Guarantor may merge or consolidate with, or convey, sell or transfer
all or  substantially  all of its assets to, any other  Borrower  or  Guarantor,
provided  a  Borrower  is the  surviving  corporation  in  any  such  merger  or
consolidation  and any such  transaction  shall not adversely  affect any of the
rights of Lender under the EximBank  Documents,  (y) any Inactive Subsidiary may
liquidate  or dissolve or merge or  consolidate  with or into another Loan Party
provided a Borrower  or a Guarantor  is the  surviving  corporation  in any such
merger  or  consolidation  involving  a  Borrower  or  Guarantor  and  any  such
transaction  shall not  adversely  affect any of the rights of Lender  under and
shall not be prohibited by the EximBank  Documents and (z) any Subsidiary  which
is not a Domestic Subsidiary may liquidate or dissolve,  or merge or consolidate
with or into,  another  non-Domestic  Subsidiary  or a Loan Party  (other than a
Borrower) whose capital stock is pledged (or, if a non-Domestic Subsidiary,  65%
of whose capital stock is pledged) to the Lender pursuant to a Pledge Agreement.

          (B) Acquire by purchase or otherwise,  all or any substantial  part of
the business or assets of, or stock or other  evidence of  beneficial  ownership
of, any Person or a division of any Person or  establish,  create or acquire any
new  Subsidiary;  provided,  however,  that so long as no  Default  or  Event of
Default has occurred and is continuing  before and after giving effect  thereto,
any  Borrower,  any  Guarantor or any of their  Subsidiaries  may acquire all or
substantially  all of the assets of or all the  capital  stock of any Person (in
each case, a "Permitted  Acquisition") or organize a new Subsidiary solely to do
so;  provided  that  each  Permitted   Acquisition   shall  be  subject  to  the
satisfaction of the condition  precedent that the Unused  Availability  shall be
not less  than  $2,000,000  without  giving  effect  to the  proposed  Permitted
Acquisition for the ninety (90) day period  preceding the  consummation  thereof
and  to  the  satisfaction  of  each  of  the  following  additional  conditions
precedent:

               (1) Lender  shall  receive not less than  fifteen  (15)  Business
Days' prior written notice of such proposed Permitted Acquisition,  which notice
shall  include a reasonably  detailed  description  of such  proposed  Permitted
Acquisition;

               (2) such Permitted  Acquisition shall only be of capital stock of
a Target whose assets (except assets with an aggregate  market value of $100,000
or less) are located  solely in, or those assets of a Target (except assets with
an aggregate  market value of $100,000 or less) which are located solely in, the
United States and comprising a business,  or those assets of a business,  of the
type engaged in by  Borrowers  as of the Closing  Date or a related,  similar or
compatible  business,  and which business would not subject Lender to regulatory
or third  party  approvals  in  connection  with the  exercise of its rights and
remedies under this Agreement or any other Loan Documents;

               (3) such Permitted Acquisition shall be consensual and shall have
been approved by the Target's board of directors;

               (4) the  business  and  assets  of the  Target  acquired  in such
Permitted  Acquisition shall be acquired free and clear of all Liens (other than
Permitted Encumbrances);

               (5) no Indebtedness,  contingent obligations or other liabilities
shall be  incurred or assumed in  connection  with such  Permitted  Acquisition,
except (x) Loan  advances,  (y)  ordinary  course  trade  payables  and  accrued
expenses and (z)  Indebtedness  and guaranties  permitted  under Section 7.1 and
Section 7.2;

               (6) on or prior to the date  thereof,  Lender  will be  granted a
first and prior perfected security interest (subject to Permitted  Encumbrances)
in all assets and equity  securities  being acquired  pursuant to such Permitted
Acquisition, and the Borrowers, the Guarantors and their respective Subsidiaries
shall have executed such  documents and taken such actions as may be required by
Lender in connection therewith;


               (7)  Borrowers  shall  have  delivered  to  Lender,  in form  and
substance satisfactory to Lender:

                    (i) pro forma balance  sheets of Borrowers,  Guarantors  and
their respective  Subsidiaries  (the  "Acquisition Pro Forma") on a consolidated
basis,  based on financial data as of a recent date, which shall be complete and
shall  accurately  and  fairly  represent  the  assets,  liabilities,  financial
condition  and  results  of  operations  of  Borrowers,   Guarantors  and  their
respective Subsidiaries in accordance with GAAP consistently applied, but taking
into  account  such  Permitted  Acquisition  and the  funding  of all  Loans  in
connection therewith,  and the Acquisition  Projections (as hereinafter defined)
shall  reflect that Unused  Availability  for the 90-day  period  following  the
consummation of such Permitted Acquisition will exceed $2,000,000 on a pro forma
basis  (giving  effect to such  Permitted  Acquisition  and all Loans  funded in
connection therewith as if made on the first day of such period);

                    (ii)  updated  versions  of  the  most  recently   delivered
projections  covering  the one (1) year  period  commencing  on the date of such
Permitted  Acquisition and otherwise prepared in accordance with subsections 4.3
and 4.17 (the  "Acquisition  Projections")  and based upon historical  financial
data of a recent date satisfactory to Lender, taking into account such Permitted
Acquisition; and

                    (iii)  a  certificate  of the  chief  financial  officer  of
Systems and Borrowers to the effect that: (I) each Borrower and Guarantor (after
taking into consideration all rights of contribution and indemnity such Borrower
and Guarantor has against each other Borrower and Guarantor) will be solvent (as
represented  by  Borrowers  in  subsection  4.16) upon the  consummation  of the
transaction contemplated by the Permitted Acquisition;  (II) the Acquisition Pro
Forma fairly presents the financial condition of Borrowers, Guarantors and their
respective  Subsidiaries  (on a consolidated  basis) as of the date hereof after
giving effect to the  transactions  contemplated by such Permitted  Acquisition;
(III) the Acquisition Projections are good faith estimates, based on assumptions
believed at the date of such certificate in good faith to be reasonable,  of the
future  financial  performance  of Borrowers,  Guarantors  and their  respective
Subsidiaries   subsequent  to  the  date  thereof  based  upon  the   historical
performance  and  the  projected  future  financial  performance  of  Borrowers,
Guarantors and their respective Subsidiaries; and (IV) Borrowers, Guarantors and
their respective  Subsidiaries have completed their due diligence  investigation
with respect to the Target and such Permitted  Acquisition,  which investigation
was conducted in a manner  similar to that which would have been  conducted by a
prudent   purchaser  of  a   comparable   business  and  the  results  of  which
investigation  were  acceptable to Borrowers,  Guarantors  and their  respective
Subsidiaries;

               (8) on or prior to the date of such Permitted Acquisition, Lender
shall  have  received,  in  form  and  substance  satisfactory  to  Lender,  all
collateral and security documents, opinions,  certificates,  lien search results
and other documents  reasonably  requested by Lender to evidence compliance with
the foregoing provisions of this subsection 7.6(B); and


               (9) the total  Acquisition  Costs payable in connection with such
Permitted  Acquisition  shall not exceed $750,000 and the sum of all Acquisition
Costs paid in any Fiscal  Year in  connection  with all  Permitted  Acquisitions
shall not exceed $1,000,000.

     7.7  Transactions  with Affiliates.  Directly or indirectly,  enter into or
permit to exist any  transaction  (including  the purchase,  sale or exchange of
property  or the  rendering  of any  service)  with  any  Affiliate  or with any
officer,  director or employee of any Loan Party, except for transactions in the
ordinary course of and pursuant to the reasonable requirements of Borrower's,  a
Guarantor's or one of their respective  Subsidiary's  business and upon fair and
reasonable terms which,  except for transactions  which are expressly  permitted
pursuant to the terms of this Agreement, are fully disclosed to Lender and which
are no less favorable to such Borrower,  Guarantor or Subsidiary than they would
obtain in comparable arm's length transactions with unaffiliated Persons.

     7.8  Environmental  Liabilities.  (a) Violate any applicable  Environmental
Law;  (b)  dispose  of  any  Hazardous  Materials  (except  in  accordance  with
applicable  law)  into or onto or  from,  any real  property  owned,  leased  or
operated  by any Loan  Party;  or (c) permit any Lien  imposed  pursuant  to any
Environmental Law to be imposed or to remain on any real property owned,  leased
or operated by any Loan Party.

     7.9 Conduct of Business.  Engage in any business  other than  businesses of
the type engaged in by Borrowers,  Guarantors or any  Subsidiary  thereof on the
Closing Date and related, similar types of business.

     7.10  Compliance  with ERISA.  Establish  any new Employee  Benefit Plan or
amend any existing Employee Benefit Plan if the liability or increased liability
resulting from such  establishment or amendment could be reasonably  expected to
have a Material Adverse Effect.  Neither Borrowers,  Guarantors nor any of their
Subsidiaries shall fail to establish, maintain and operate each Employee Benefit
Plan in compliance in all material  respects with the  provisions of ERISA,  the
IRC and all  other  applicable  laws  and the  regulations  and  interpretations
thereof.

     7.11 Tax Consolidations.  File or consent to the filing of any consolidated
income tax return with any Person other than Systems,  Borrowers or any of their
respective  Subsidiaries;  and in the event any  Borrower or  Guarantor  files a
return with Systems, such Borrower's or Guarantor's contribution with respect to
taxes as a  result  of the  filing  of such  consolidated  return  shall  not be
greater, nor the receipt of tax benefits less, than they would have been if such
Borrower had not filed a consolidated return.

     7.12  Subsidiaries.  Except to the extent  permitted by subsection  7.6(B),
establish, create or acquire any new Subsidiaries.

     7.13 Fiscal Year. Change its Fiscal Year.


     7.14 Press Release; Public Offering Materials.  Disclose the name of Lender
in any press release or in any  prospectus,  proxy  statement or other materials
filed with any governmental  entity relating to a public offering of the capital
stock of any Loan Party except as may be required by law.

     7.15 Bank Accounts.  Establish any new bank accounts, or amend or terminate
any  Blocked  Account or  lockbox  agreement,  without  Lender's  prior  written
consent; provided, that Borrowers,  Guarantors and their respective Subsidiaries
may  establish  additional  bank  accounts so long as in each case (a)  Borrower
Representative  provides  Lender  with at least ten (10)  Business  Days'  prior
written  notice  thereof and (b) each such bank  account  which is a  depository
account  is subject  to an  effective  Blocked  Account  Agreement  prior to the
establishment  thereof.  This Section 7.15 shall not apply to Subsidiaries which
are not Domestic Subsidiaries.

     7.16 Amendments.  Amend its certificate of incorporation,  by-laws or other
organizational documents,  except for amendments (of which prior notice has been
given  to  Lender)  that  would  not  adversely  affect  any  Obligations,   any
Collateral,  any rights of the Lender under any Loan  Document or the ability of
any Borrower or Guarantor to perform its  Obligations or conduct its business as
previously conducted.

                    SECTION 8. DEFAULT, RIGHTS AND REMEDIES

     8.1 Event of  Default.  "Event of  Default"  shall mean the  occurrence  or
existence of any one or more of the
following:

          (A) Payment.  Failure to make payment of any of the  Obligations  when
due and in the case of interest, such failure shall not be cured within five (5)
days of the applicable due date; or

          (B) Default in Other Agreements. (1) (a) Failure of any Loan Party, GP
Strategies  or  ManTech  to pay  when  due  any  principal  or  interest  on any
Indebtedness  (other than the  Obligations) or (b) breach or default of any Loan
Party, GP Strategies or ManTech with respect to any Indebtedness (other than the
Obligations);  if such  failure to pay,  breach or default  entitles  the holder
(with  the  giving  of  notice  or  passage  of time,  or  both)  to cause  such
Indebtedness  having an  individual  principal  amount in excess of  $100,000 or
having an  aggregate  principal  amount in  excess of  $200,000  to become or be
declared  due prior to its  stated  maturity;  or (2)  default  under any of the
EximBank Documents,  including any breach of any covenant thereunder  regardless
of whether such covenant is more restrictive  than, or conflicts with, or covers
the same or similar  matters as the covenants set forth in this Agreement or any
other Loan Documents; or

          (C) Breach of Certain Provisions. Failure of any Loan Party to perform
or comply with any term or condition contained in subsections 5.1 (A), (B), (C),
(F) or (J) or 5.3,  5.5,  5.6 or 5.12(D) or contained in Section 6 or Section 7;
or


          (D) Breach of Warranty. Any representation, warranty, certification or
other  statement  made by any Loan Party,  GP  Strategies or ManTech in any Loan
Document or in any statement or certificate at any time given by such Person (or
any officer or cash manager) in writing  pursuant or in connection with any Loan
Document is false in any material respect on the date made or deemed made; or

          (E) Other Defaults Under Loan Documents. Any Loan Party, GP Strategies
or ManTech  defaults in the performance of or compliance with any term contained
in this  Agreement or the other Loan  Documents and such default is not remedied
or waived within twenty (20) days after  receipt by Borrower  Representative  of
notice from Lender of such default  (other than  occurrences  described in other
provisions of this  subsection 8.1 for which a different grace or cure period is
specified or which constitute immediate Events of Default); or

          (F) Change in Control.  GSE ceases to  beneficially  own and  control,
directly or  indirectly,  at least one hundred  percent (100%) of the issued and
outstanding  shares of each class of  capital  stock of each  Borrower  entitled
(without  regard to the occurrence of any  contingency) to vote for the election
of a  majority  of the  members of such  Borrower's  board of  directors;  or GP
Strategies shall at any time cease to beneficially own and control,  directly or
indirectly, at least the same percentage of the issued and outstanding shares of
each  class  of  capital  stock  of  Systems  entitled  (without  regard  to the
occurrence  of any  contingency)  to vote for the  election  of the  members  of
Systems'  board  of  directors  as it  does on the  closing  date,  except  such
percentage may reduce solely as a result of issuance of additional securities to
third parties by Systems; or

          (G) Involuntary Bankruptcy;  Appointment of Receiver, etc. (1) A court
enters  a decree  or order  for  relief  with  respect  to any  Loan  Party,  GP
Strategies or ManTech in an involuntary  case under any  applicable  bankruptcy,
insolvency  or other  similar law now or  hereafter  in effect,  which decree or
order is not stayed or other similar  relief is not granted under any applicable
federal or state law; or (2) the continuance of any of the following  events for
sixty (60) days unless dismissed,  bonded or discharged: (a) an involuntary case
is  commenced  against  any Loan  Party,  GP  Strategies  or  ManTech  under any
applicable  bankruptcy,  insolvency  or other  similar law now or  hereafter  in
effect;  or (b) a decree or order of a court for the  appointment of a receiver,
liquidator,  sequestrator,  trustee,  custodian or other officer  having similar
powers  over  any  Loan  Party,  GP  Strategies  or  ManTech  or  over  all or a
substantial part of their  respective  property,  is entered;  or (c) an interim
receiver,  trustee or other  custodian is  appointed  without the consent of any
Loan  Party,  GP  Strategies  or ManTech  for all or a  substantial  part of the
property of any Loan Party, GP Strategies or ManTech; or

          (H) Voluntary Bankruptcy;  Appointment of Receiver,  etc. (1) Any Loan
Party, GP Strategies or ManTech  commences a voluntary case under any applicable
bankruptcy,  insolvency  or other  similar law now or  hereafter  in effect,  or
consents  to the entry of an order for relief in an  involuntary  case or to the
conversion  of an  involuntary  case to a  voluntary  case under any such law or
consents to the  appointment of or taking  possession by a receiver,  trustee or
other custodian for all or a substantial  part of its property;  or (2) any Loan
Party,  GP  Strategies  or  ManTech  makes any  assignment  for the  benefit  of
creditors;  or (3) the board of directors or similar  Persons of any Loan Party,
GP Strategies or ManTech adopts any resolution or otherwise authorizes action to
approve any of the actions referred to in this subsection 8.1(H); or


          (I) Liens.  Any lien,  levy or  assessment  is filed or recorded  with
respect to or  otherwise  imposed  upon all or any part of (i) any assets of the
Loan  Parties  not  constituting  Collateral  and  having a value at any time in
excess of $125,000 in the aggregate or (ii) any  Collateral,  in any case by the
United  States,  any foreign  government or any  department  or  instrumentality
thereof or by any  state,  county,  municipality  or other  governmental  agency
(other than  Permitted  Encumbrances)  and such lien,  levy or assessment is not
stayed, vacated, paid or discharged within thirty (30) days; or

          (J) Judgment and Attachments.  Any money judgment,  writ or warrant of
attachment, or similar process involving (1) an amount in any individual case in
excess of  $100,000 or (2) an amount in the  aggregate  at any time in excess of
$200,000  (in either case not  adequately  covered by  insurance as to which the
insurance  company has  acknowledged  coverage) is entered or filed  against any
Loan Party or any of its assets and remains undischarged, unvacated, unbonded or
unstayed  for a period of thirty  (30) days or in any event  later than five (5)
days prior to the date of any proposed sale thereunder; or

          (K) Dissolution.  Any order, judgment or decree is entered against any
Loan Party,  GP Strategies or ManTech  decreeing the  dissolution or split up of
such Loan Party, GP Strategies or ManTech and such order remains undischarged or
unstayed for a period in excess of thirty (30) days; or

          (L) Solvency. Any Borrower, Guarantor, GP Strategies or ManTech ceases
to be solvent  (as  represented  in  subsection  4.16) or admits in writing  its
present or prospective inability to pay its debts as they become due; or

          (M) Injunction.  Any Loan Party is enjoined,  restrained or in any way
prevented by the order of any court or any  administrative  or regulatory agency
from  conducting  all or any  material  part  of its  business  and  such  order
continues  for more than  thirty  (30) days,  if any such event or  circumstance
could reasonably be expected to have a Material Adverse Effect; or

          (N) Invalidity of any Loan Documents. (1) Any of the Loan Documents or
EximBank  Documents  for any  reason,  other than a partial  or full  release in
accordance  with the terms thereof,  ceases to be in full force and effect or is
declared  to be null and void,  or any Loan  Party or Exim or GP  Strategies  or
ManTech denies that it has any further  liability  (except after payment in full
of all  amounts  payable  thereunder)  under  any  Loan  Documents  or  EximBank
Documents to which it is party, or gives notice to such effect; or
               (2) If either ManTech or GP Strategies  shall deliver to Lender a
notice of termination of the ManTech  Guarantee or the GP Strategies  Guarantee;
or
                    (3) If  EximBank  shall  not  agree to  renew,  on terms and
conditions  satisfactory to the Lender in its sole  discretion,  the guaranty by
EximBank  under the EximBank  Documents at least 30 days prior to any expiration
date of such guaranty; or

          (O)  Failure  of  Security.  Lender  does not have or ceases to have a
valid and  perfected  first  priority  security  interest  in any portion of the
Collateral  (other  than cash and other  monies in the  possession  or under the
control of a Person  other than Lender as to which  Lender is unable to obtain a
perfected  security  interest by any means under the Uniform  Commercial Code of
the  relevant   jurisdiction)  (subject  to  Permitted  Encumbrances  and  Liens
permitted  under Section  7.3(B)),  in each case,  for any reason other than the
failure of Lender to take any action within its control; or

          (P) Damage,  Strike,  Casualty. Any material damage to, or loss, theft
or  destruction  of, any  Collateral,  whether or not  insured,  or any  strike,
lockout, labor dispute,  embargo,  condemnation,  act of God or public enemy, or
other casualty which causes,  for more than sixty (60)  consecutive  days beyond
the coverage  period of any  applicable  business  interruption  insurance,  the
cessation or  substantial  curtailment  of revenue  producing  activities at any
facility of any Loan Party if any such event or circumstance could reasonably be
expected to have a Material Adverse Effect; or

          (Q) Licenses and Permits.  The loss,  suspension or revocation  of, or
failure to renew,  any license or permit now held or  hereafter  acquired by any
Loan  Party,  if such loss,  suspension,  revocation  or failure to renew  could
reasonably be expected to have a Material Adverse Effect; or

          (R)  Forfeiture.  There is filed against any Loan Party,  any civil or
criminal  action,  suit or  proceeding  under any federal or state  racketeering
statute  (including,  without limitation,  the Racketeer  Influenced and Corrupt
Organization Act of 1970), which action, suit or proceeding (1) is not dismissed
within one hundred  twenty (120) days;  and (2) could  reasonably be expected to
result  in the  confiscation  or  forfeiture  of  any  material  portion  of the
Collateral; or

          (S)  System   Activities.   Systems   shall  engage  in  any  business
activities,  other than  activities  solely related to ownership of the stock of
its  Subsidiaries,  Corporate  Overhead  activities,  and activities  related to
compliance with laws and regulations  applicable to Systems as a  publicly-owned
corporation; or

          (T) Inactive Subsidiaries'  Activities.  Any Inactive Subsidiary shall
hold any assets, incur any liabilities (other than corporate franchise taxes and
other similar charges incidental to the maintenance of its corporate  existence)
or engage in any business activity, unless, within ten (10) days after the first
to occur of any such activity,  such entity shall have executed and delivered to
Lender such  instruments  and  documents  as shall be  satisfactory  in form and
substance to Lender and as shall provide for such entity being a Guarantor under
this Agreement; or

          (U) Material Adverse Change. Since the Closing Date, any change in the
business,  assets,  liabilities,  financial condition,  results of operations or
business  prospects of any Loan Party shall have been  discovered  or shall have
occurred,  or any event shall have occurred or failed to occur,  that has had or
might have,  either alone or in conjunction with all other such changes,  events
and failures, a Materially Adverse Effect.


     8.2 Suspension of Commitments.  Upon the occurrence of any Default or Event
of  Default,  notwithstanding  any grace  period or right to cure,  Lender  may,
without  notice  or  demand,  immediately  cease  making  additional  Loans  and
providing  Lender  Letters of Credit  and the  Commitments  shall be  suspended;
provided  that, in the case of a Default,  if the subject  condition or event is
waived or cured  within any  applicable  grace or cure period,  the  Commitments
shall be reinstated.

     8.3 Acceleration.  Upon the occurrence of any Event of Default described in
the foregoing  subsections 8.1(G) or 8.1(H), all Obligations shall automatically
become  immediately  due and payable and the Borrowers  shall be immediately and
automatically  obligated  to deposit  with Lender the amount of cash  collateral
referred  to in clause (b) below,  in each case,  without  presentment,  demand,
protest or other  requirements  of any kind,  all of which are hereby  expressly
waived by all Borrowers and  Guarantors,  and the  Commitments  shall  thereupon
terminate.  Upon the occurrence and during the continuance of any other Event of
Default,  Lender may by written notice to Borrower  Representative,  (a) declare
all or any  portion  of the  Obligations  to be,  and the same  shall  forthwith
become,  immediately due and payable  without  presentment,  demand,  protest or
other  requirements of any kind, all of which are hereby expressly waived by all
Borrowers and Guarantors,  and the Commitments shall thereupon terminate and (b)
demand that  Borrowers  immediately  deposit with Lender cash  collateral  in an
amount  equal to one  hundred  five  percent  (105%)  of the  Letter  of  Credit
Liability  to secure all  Obligations  in respect of  payments  under the Lender
Letters of Credit and Risk  Participation  Agreements  when  required,  and such
amount shall become  immediately  due and payable without  presentment,  demand,
protest or other  requirements  of any kind,  all of which are hereby  expressly
waived by all Borrowers and Guarantors.


     8.4  Remedies.  If  any  Event  of  Default  shall  have  occurred  and  be
continuing, in addition to and not in limitation of any other rights or remedies
available  to Lender at law or in equity,  Lender may exercise in respect of the
Collateral,  in addition to all other rights and remedies provided for herein or
otherwise  available  to it, all the rights and  remedies of a secured  party on
default under the UCC (whether or not the UCC applies to the affected Collateral
but subject to the provisions of the UCC, except in the case of capital stock of
non-Domestic  Subsidiaries)  and may also (a) notify any or all  obligors on the
Accounts to make all payments directly to Lender;  (b) require the Borrowers and
Guarantors to, and the Borrowers and Guarantors  hereby agree that they will, at
their expense and upon request of Lender forthwith,  assemble all or part of the
Collateral  as directed by Lender and make it  available to Lender at a place to
be designated by Lender which is reasonably  convenient to Lender;  (c) withdraw
all cash in the  Blocked  Accounts  and  apply  such  monies in  payment  of the
Obligations  in the manner  provided in  subsection  8.7; (d) without  notice or
demand or legal process, enter upon any premises of the Borrowers and Guarantors
and  take  possession  of the  Collateral;  and (e)  without  notice  except  as
specified below,  sell the Collateral or any part thereof in one or more parcels
at public or private sale, at any of Lender's offices or elsewhere, at such time
or times,  for cash,  on credit or for  future  delivery,  and at such  price or
prices and upon such other terms as Lender may deem commercially reasonable. The
Borrowers  and  Guarantors  agree  that,  to the extent  notice of sale shall be
required by law, at least ten (10) days notice to Borrower Representative of the
time and place of any public sale or the time after which any private sale is to
be made shall constitute reasonable notification. At any sale of the Collateral,
if permitted by law,  Lender may bid (which bid may be, in whole or in part,  in
the form of cancellation of indebtedness)  for the purchase of the Collateral or
any portion thereof for the account of Lender.  Lender shall not be obligated to
make any sale of Collateral  regardless of notice of sale having been given. The
Borrowers and Guarantors shall remain liable for any deficiency with interest at
the Default  Rate.  Lender may  adjourn any public or private  sale from time to
time by announcement  at the time and place fixed  therefor,  and such sale may,
without  further  notice,  be made at the  time  and  place  to  which it was so
adjourned.  To the extent permitted by law, the Borrowers and Guarantors  hereby
specifically  waive all rights of redemption,  stay or appraisal which they have
or may have under any law now existing or hereafter enacted. Lender shall not be
required to proceed  against any Collateral  but may proceed  against any or all
the Borrowers and  Guarantors  directly  and/or GP Strategies and ManTech and/or
EximBank directly.

     8.5  Appointment of  Attorney-in-Fact.  Each Borrower and Guarantor  hereby
constitutes and appoints Lender as its  attorney-in-fact  with full authority in
its place and stead and in its name, the name of Lender or otherwise,  from time
to time in Lender's  discretion  while an Event of Default is continuing to take
any action and to execute  any  instrument  that  Lender may deem  necessary  or
advisable to accomplish the purposes of this Agreement,  including:  (a) to ask,
demand,  collect, sue for, recover,  compound,  receive and give acquittance and
receipts  for  moneys  due and to become  due under or in  respect of any of the
Collateral;  (b) to adjust,  settle or  compromise  the amount or payment of any
Account, or release wholly or partly any customer or obligor thereunder or allow
any credit or discount thereon; (c) to receive,  endorse, and collect any drafts
or other instruments, documents and chattel paper, in connection with clause (a)
above;  (d) to file any claims or take any action or institute  any  proceedings
that Lender may deem  necessary or desirable  for the  collection  of any of the
Collateral  or  otherwise to enforce the rights of Lender with respect to any of
the  Collateral;  and (e) to sign and endorse any  invoices,  freight or express
bills,   bills  of  lading,   storage  or   warehouse   receipts,   assignments,
verifications  and  notices in  connection  with  Accounts  and other  documents
relating to the  Collateral.  The  appointment of Lender as each  Borrower's and
Guarantor's attorney and Lender's rights and powers are coupled with an interest
and are irrevocable until payment in full and complete performance of all of the
Obligations.

     8.6  Limitation  on Duty of Lender with Respect to  Collateral.  Beyond the
safe custody  thereof,  Lender shall have no duty with respect to any Collateral
in its  possession  or control (or in the  possession or control of any agent or
bailee)  or with  respect to any income  thereon or the  preservation  of rights
against prior parties or any other rights  pertaining  thereto.  Lender shall be
deemed to have exercised  reasonable care in the custody and preservation of the
Collateral  in  its   possession  if  the   Collateral  is  accorded   treatment
substantially equal to that which Lender accords its own property.  Lender shall
not be liable or responsible for any loss or damage to any of the Collateral, or
for any diminution in the value thereof, by reason of the act or omission of any
warehouseman,  carrier,  forwarding agency,  consignee or other Lender or bailee
selected by Lender in good faith.


     8.7 Application of Proceeds. Upon the occurrence and during the continuance
of an Event of Default,  (a) the Borrowers and Guarantors  irrevocably waive the
right to direct the  application  of any and all  payments  at any time or times
thereafter  received by Lender from or on behalf of any  Borrower or  Guarantor,
and the Borrowers and Guarantors hereby irrevocably agree that Lender shall have
the continuing exclusive right, subject to Lender's agreements with EximBank, to
apply and to reapply  any and all  payments  received at any time or times after
the  occurrence and during the  continuance  of an Event of Default  against the
Obligations  in such  manner as Lender may deem  advisable  notwithstanding  any
previous  entry by Lender upon any books and records and (b) the proceeds of any
sale of, or other  realization  upon, all or any part of the Collateral shall be
applied:  first, to all fees, costs and expenses incurred by Lender with respect
to this Agreement,  the other Loan Documents or the Collateral;  second,  to all
fees due and owing to Lender;  third,  to accrued  and  unpaid  interest  on the
Obligations;  fourth, to the principal  amounts of the Obligations  outstanding;
and fifth, to any other indebtedness or obligations of any Borrower or Guarantor
owing to Lender.

     8.8 License of Intellectual  Property.  Each Borrower and Guarantor  hereby
assigns,  transfers and conveys to Lender  effective  upon the occurrence of any
Event of  Default  hereunder,  the  non-exclusive  right and  license to use all
Intellectual  Property owned or used by it together with any goodwill associated
therewith,  all to the  extent  necessary  to enable  Lender to  realize  on the
Collateral  and to  permit  Lender  and any  successor  or  assign  to enjoy the
benefits of the Collateral. This right and license shall inure to the benefit of
all successors,  assigns and  transferees of Lender and its successors,  assigns
and transferees,  whether by voluntary conveyance, operation of law, assignment,
transfer,  foreclosure, deed in lieu of foreclosure or otherwise. Such right and
license is granted free of charge, without requirement that any monetary payment
whatsoever be made to any Borrower or Guarantor by Lender.

     8.9 Waivers,  Non-Exclusive  Remedies.  No failure on the part of Lender to
exercise,  and no delay in exercising  and no course of dealing with respect to,
any right under this  Agreement or the other Loan  Documents  shall operate as a
waiver thereof;  nor shall any single or partial exercise by Lender of any right
under this  Agreement or any other Loan  Document  preclude any other or further
exercise  thereof  or the  exercise  of any  other  right.  The  rights  in this
Agreement and the other Loan  Documents are  cumulative and are not exclusive of
any other remedies provided by law.


                SECTION 9. ASSIGNMENT AND PARTICIPATION; SETOFF

     9.1 Assignments and Participations in Loans.

          (A) Lender may  assign all or any  portion of its rights and  delegate
all or any portion of its  obligations  under this Agreement in whole or in part
to another  Person  without  the  consent of any Loan  Party.  In the case of an
assignment authorized under this subsection 9.1, the assignee shall have, to the
extent of such assignment, the same rights, benefits and obligations as it would
if it were a Lender  hereunder and the assigning Lender shall be relieved of its
obligations  hereunder  with  respect  to its  Commitment  or  assigned  portion
thereof.  The Borrowers and  Guarantors  hereby  acknowledge  and agree that any
assignment will give rise to a direct  obligation of Borrowers and Guarantors to
the assignee and that the assignee shall be considered to be a "Lender".


          (B) Lender may sell participations in all or any part of any Loans and
other Obligations to another Person; provided, that any such participation shall
be in a minimum amount of $1,000,000,  and provided,  further,  that all amounts
payable by Borrowers  and  Guarantors  hereunder  shall be determined as if that
Lender had not sold such  participation.  The  Borrowers and  Guarantors  hereby
acknowledge  and  agree  that  any  participation  will  give  rise to a  direct
obligation of Borrowers and Guarantors to the  participant,  and the participant
under each  participation  shall for purposes of subsections  2.8, 2.9, 2.11 and
10.2 be considered to be a "Lender".

          (C)  Lender  may  furnish  any  information  concerning  Systems,  any
Borrower,  any other Guarantor and any of their  respective  Subsidiaries in the
possession of Lender from time to time to assignees and participants  (including
prospective assignees and participants).

          (D)  Notwithstanding  any other provision set forth in this Agreement,
Lender may at any time  create a security  interest in all or any portion of its
rights under this Agreement (including,  without limitation,  the Loans owing to
it and the Note held by it in favor of any Federal  Reserve  Bank in  accordance
with Regulation A of the Board of Governors of the Federal Reserve System).

     9.2 Set Off and  Sharing  of  Payments.  In  addition  to any rights now or
hereafter  granted under applicable law and not by way of limitation of any such
rights,  upon the occurrence and during the continuance of any Event of Default,
Lender is hereby authorized by Borrowers and Guarantors at any time or from time
to time,  without  notice to any Borrowers and Guarantors or to any other Person
to set off and to  appropriate  and to apply  any and all (A)  balances  held by
Lender or any Affiliate at any of its offices for the account of any Borrower or
Guarantor  (regardless of whether such balances are then due to such Borrower or
Guarantor),  and (B) other  property  at any time held or owing by Lender or any
Affiliate  to or for the credit or for the account of any  Borrower or Guarantor
against and on account of any of the Obligations which are not paid when due.


                           SECTION 10. MISCELLANEOUS


     10.1  Expenses  and  Attorneys'  Fees.  Whether  or  not  the  transactions
contemplated  hereby shall be  consummated,  Borrowers and  Guarantors  agree to
promptly pay all fees, costs and expenses  incurred by Lender in connection with
any matters  contemplated  by or arising out of this Agreement or the other Loan
Documents  including the following,  and all such fees, costs and expenses shall
be part of the Obligations, payable on demand and secured by the Collateral: (a)
fees, costs and expenses (including  reasonable attorneys' fees, allocated costs
of internal counsel and fees of environmental consultants, accountants and other
professionals  retained by Lender)  incurred in connection with the examination,
review, due diligence investigation,  documentation and closing of the financing
arrangements  evidenced  by the Loan  Documents;  (b) fees,  costs and  expenses
(including  reasonable  attorneys' fees, allocated costs of internal counsel and
fees of environmental consultants,  accountants and other professionals retained
by Lender)  incurred in connection  with the review,  negotiation,  preparation,
documentation,  execution and  administration of the Loan Documents,  the Loans,
the  Lender  Letters  of  Credit,   and  any  amendments,   waivers,   consents,
forbearances and other  modifications  relating thereto or any  subordination or
intercreditor  agreements;  (c) fees,  costs and expenses  incurred by Lender in
creating, perfecting and maintaining perfection of Liens in favor of Lender; (d)
fees,  costs and expenses  incurred by Lender in connection  with  forwarding to
Borrowers the proceeds of Loans including  Lender's standard wire transfer fees;
(e) fees, costs, expenses and bank charges,  including bank charges for returned
checks,  incurred by Lender in  establishing,  maintaining and handling lock box
accounts,  blocked  accounts or other accounts for collection of the Collateral;
(f) fees, costs,  expenses (including  reasonable  attorneys' fees and allocated
costs of  internal  counsel)  of Lender  and  costs of  settlement  incurred  in
collecting  upon or enforcing  rights  against the Collateral or incurred in any
action to enforce this  Agreement or the other Loan  Documents or to collect any
payments due from Borrowers or Guarantors under this Agreement or any other Loan
Document or incurred in connection with any refinancing or  restructuring of the
credit  arrangements  provided under this Agreement,  whether in the nature of a
"workout" or in connection with any insolvency or bankruptcy proceedings
or otherwise.

     10.2  Indemnity.  In  addition  to the  payment  of  expenses  pursuant  to
subsection 10.1,  whether or not the transactions  contemplated  hereby shall be
consummated,  each  Borrower  and  Guarantor  jointly  and  severally  agrees to
indemnify,  pay and hold  Lender  and any  holder of the Note and the  officers,
directors,  employees, agents, consultants,  auditors,  affiliates and attorneys
of, and  Persons  engaged by,  Lender  (collectively  called the  "Indemnitees")
harmless from and against any and all liabilities, obligations, losses, damages,
penalties,  actions, judgments, suits, claims, costs, expenses and disbursements
of any kind or  nature  whatsoever  (including  the fees  and  disbursements  of
counsel   for  such   Indemnitees   in   connection   with  any   investigative,
administrative or judicial  proceeding  commenced or threatened,  whether or not
such  Indemnitee  shall be  designated a party  thereto) that may be imposed on,
incurred by, or asserted against that  Indemnitee,  in any manner relating to or
arising out of this Agreement or the other Loan Documents,  the  consummation of
the transactions contemplated by this Agreement, the statements contained in the
commitment letters, if any, delivered by Lender,  Lender's agreement to make the
Loans hereunder,  the use or intended use of the proceeds of any of the Loans or
the Lender Letters of Credit or the exercise of any right or remedy hereunder or
under the other Loan Documents (the  "Indemnified  Liabilities");  provided that
the Borrowers and Guarantors shall have no obligation to an Indemnitee hereunder
with respect to  Indemnified  Liabilities  arising from the gross  negligence or
willful  misconduct  of that  Indemnitee  as  determined by a court of competent
jurisdiction.

     10.3 Amendments and Waivers.

          (A) Except as otherwise  provided herein, no amendment,  modification,
termination  or waiver of any provision of this  Agreement or any Loan Document,
or consent to any departure by any Loan Party  therefrom,  shall in any event be
effective unless the same shall be in writing and signed by Lender.

          (B) Each  amendment,  modification,  termination  or  waiver  shall be
effective only in the specific  instance and for the specific  purpose for which
it was given.

          (C) No  amendment,  modification  or  waiver of any  provision  of any
Lender Letter of Credit shall be applicable  without the written  concurrence of
the issuer of such Lender  Letter of Credit.  No notice to or demand on Systems,
any  Borrower or any other  Guarantor  in any case shall  entitle  Systems,  any
Borrower  or any other  Guarantor  to any other or  further  notice or demand in
similar or other circumstances.


          (D)  In  the  event  Lender  waives  (1)  any  Default  arising  under
subsection  8.1(E) as a result of the breach of any of the provisions of Section
5 of this  Agreement  (other than any such breach which  constitutes an Event of
Default)  or (2) any  Default  constituting  a  condition  to the funding of any
Revolving Advance or issuance of any Lender Letter of Credit,  such waiver shall
expire on the date upon which the  Default  which was the subject of such waiver
matures into an Event of Default pursuant to the terms of this Agreement.

     10.4 Notices.  Unless otherwise  specifically  provided herein, all notices
shall be in writing addressed to the respective party as set forth below and may
be personally served,  telecopied or sent by overnight courier service or United
States mail and shall be deemed to have been given:  (a) if delivered in person,
when  delivered;  (b) if delivered by telecopy,  on the date of  transmission if
transmitted on a Business Day before 4:00 p.m. New York City time or, if not, on
the next succeeding Business Day; (c) if delivered by overnight courier, two (2)
days after delivery to such courier properly addressed;  or (d) if by U.S. Mail,
four (4) Business Days after  depositing in the United States mail, with postage
prepaid and properly addressed.

     If to any Borrower or
     Guarantor :                         GSE SYSTEMS, INC.
                                         9189 Red Branch Road
                                         Columbia, MD 21045
                                         Attn:  Ben Rosenbaum, Esq.
                                         Telecopy No.:  410-772-3599

     With a copy to:                     GOLDEN & NELSON PLLC
                                         8285 High Globe Court
                                         Millersville, MD 21108
                                         Attn:  Hedy L. Nelson, Esq.
                                         Telecopy No.:  410-729-2246

     If to Lender:                       DIME COMMERCIAL CORP.
                                         1180 Avenue of the Americas
                                         New York, N.Y.  10036
                                         Attn:  Mr. James Fisher
                                         Telecopy No.:   212-382-8349

     With a copy to:                     CONNELL & WIENER LLP
                                         545 Fifth Avenue
                                         New York, NY  10017
                                         Attn:  Paul R. Wiener, Esq.
                                         Telecopy No.:  212-687-6999

or to such other address as the party addressed shall have previously designated
by written notice to the serving party, given in accordance with this subsection
10.4.


     10.5  Survival  of  Warranties  and  Certain  Agreements.  All  agreements,
representations  and  warranties  made herein shall  survive the  execution  and
delivery   of  this   Agreement   and  the   making  of  the  Loans   hereunder.
Notwithstanding  anything in this  Agreement or implied by law to the  contrary,
the agreements of Loan Parties set forth in subsections  2.8, 2.9, 10.1 and 10.2
shall  survive  the  payment  of the  Obligations  and the  termination  of this
Agreement.

     10.6 Indulgence Not Waiver.  No failure or delay on the part of Lender,  or
any  holder  of any  Note in the  exercise  of any  power,  right  or  privilege
hereunder  or  under  the Loan  Documents  shall  impair  such  power,  right or
privilege or be construed to be a waiver of any default or acquiescence therein,
nor shall any single or partial  exercise of any such power,  right or privilege
preclude  other or  further  exercise  thereof or of any other  right,  power or
privilege.

     10.7  Marshaling;  Payments  Set  Aside.  Lender  shall  not be  under  any
obligation  to marshal any assets in favor of any  Borrower or  Guarantor or any
other  party or against or in payment of any or all of the  Obligations.  To the
extent that any Borrower or  Guarantor  makes a payment or payments to Lender or
Lender  enforces  its security  interests or exercise its rights of setoff,  and
such  payment or payments or the proceeds of such  enforcement  or setoff or any
part  thereof  are  subsequently  invalidated,  declared  to  be  fraudulent  or
preferential,  set aside and/or required to be repaid to a trustee,  receiver or
any other party under any bankruptcy  law,  state or federal law,  common law or
equitable  cause,  then to the extent of such recovery,  the Obligations or part
thereof originally intended to be satisfied,  and all Liens, rights and remedies
therefor,  shall be revived  and  continued  in full force and effect as if such
payment had not been made or such enforcement or setoff had not occurred.

     10.8  Entire  Agreement.  This  Agreement,  the  Note  and the  other  Loan
Documents  referred  to herein  embody the  final,  entire  agreement  among the
parties  hereto  and  supersede  any  and  all  prior  commitments,  agreements,
representations  and  understandings,  whether written or oral,  relating to the
subject  matter  hereof and may not be  contradicted  or varied by  evidence  of
prior,  contemporaneous,  or subsequent  oral  agreements or  discussions of the
parties hereto. There are no oral agreements among the parties hereto.

     10.9  Independence  of Covenants.  All covenants  hereunder  shall be given
independent  effect so that if a particular action or condition is not permitted
by any of such  covenants,  the fact that it would be  permitted by an exception
to, or be otherwise  within the limitations of, another covenant shall not avoid
the  occurrence  of a Default or an Event of Default if such  action is taken or
condition exists.

     10.10 Severability.  The invalidity,  illegality or unenforceability in any
jurisdiction of any provision in or obligation under this Agreement or the other
Loan   Documents   shall  not  affect  or  impair  the  validity,   legality  or
enforceability of the remaining  provisions or obligations under this Agreement,
or the other Loan  Documents  or of such  provision or  obligation  in any other
jurisdiction.

     10.11 Headings.  Section and subsection  headings and the Table of Contents
in this  Agreement are included  herein for  convenience  of reference  only and
shall not  constitute a part of this Agreement for any other purpose or be given
any substantive effect.

     10.12  APPLICABLE  LAW. THIS  AGREEMENT  SHALL BE GOVERNED BY, AND SHALL BE
CONSTRUED AND ENFORCED IN ACCORDANCE WITH, THE INTERNAL LAWS OF THE STATE OF NEW
YORK, WITHOUT REGARD TO CONFLICTS OF LAWS PRINCIPLES.

     10.13  Successors  and Assigns.  This  Agreement  shall be binding upon and
inure to the benefit of the parties hereto and their  respective  successors and
assigns  except  that  no  Borrower  or  Guarantor  may  assign  its  rights  or
obligations hereunder without the prior written consent of Lender.

     10.14 No Fiduciary Relationship; Limitation of Liabilities.

          (A) No  provision  in  this  Agreement  or in any  of the  other  Loan
Documents and no course of dealing between the parties shall be deemed to create
any fiduciary duty by Lender to any Borrower or any other Loan Party.

          (B) Neither Lender nor any affiliate, officer, director,  shareholder,
employee, attorney, or agent of Lender shall have any liability with respect to,
and Systems,  Borrowers and Guarantors hereby waive,  release,  and agree not to
sue any of them  upon,  any  claim for any  special,  indirect,  incidental,  or
consequential  damages  suffered or incurred  by any of Systems,  Borrowers  and
Guarantors  in connection  with,  arising out of, or in any way related to, this
Agreement  or  any of  the  other  Loan  Documents,  or any of the  transactions
contemplated  by this  Agreement  or any of the other Loan  Documents.  Systems,
Borrowers and Guarantors hereby waive,  release,  and agree not to sue Lender or
any of Lender's affiliates, officers, directors, employees, attorneys, or agents
for punitive damages in respect of any claim in connection with, arising out of,
or in any way related to, this Agreement or any of the other Loan Documents,  or
any  of  the  transactions   contemplated  by  this  Agreement  or  any  of  the
transactions contemplated thereby.

     10.15  CONSENT TO  JURISDICTION.  EACH OF SYSTEMS,  THE  BORROWERS  AND THE
GUARANTORS  HEREBY  CONSENTS TO THE  JURISDICTION  OF ANY STATE OR FEDERAL COURT
LOCATED WITHIN THE BOROUGH OF MANHATTAN STATE OF NEW YORK AND IRREVOCABLY AGREES
THAT, UNLESS WAIVED BY LENDER IN WRITING, ALL ACTIONS OR PROCEEDINGS ARISING OUT
OF OR  RELATING  TO THIS  AGREEMENT,  THE  NOTE  OR THE  OTHER  LOAN  DOCUMENTS,
INCLUDING ALL CLAIMS AND ACTIONS AGAINST THE LENDER,  SHALL BE LITIGATED IN SUCH
COURTS. EACH OF SYSTEMS, THE BORROWERS AND THE GUARANTORS ACCEPTS FOR ITSELF AND
IN  CONNECTION  WITH  ITS  PROPERTIES,   GENERALLY  AND   UNCONDITIONALLY,   THE
NON-EXCLUSIVE  JURISDICTION  OF THE  AFORESAID  COURTS AND WAIVES ANY DEFENSE OF
FORUM  NON  CONVENIENS,  AND  IRREVOCABLY  AGREES  TO BE BOUND  BY ANY  JUDGMENT
RENDERED  THEREBY IN CONNECTION  WITH THIS  AGREEMENT,  THE NOTE, THE OTHER LOAN
DOCUMENTS OR THE OBLIGATIONS.


     10.16  WAIVER  OF  JURY  TRIAL.  EACH OF  SYSTEMS,  THE  BORROWERS  AND THE
GUARANTORS  AND LENDER  HEREBY WAIVES ITS RIGHTS TO A JURY TRIAL OF ANY CLAIM OR
CAUSE OF ACTION  BASED UPON OR ARISING  OUT OF THIS  AGREEMENT,  THE NOTE OR THE
OTHER LOAN  DOCUMENTS.  EACH OF SYSTEMS,  THE BORROWERS AND THE  GUARANTORS  AND
LENDER  ACKNOWLEDGE  THAT THIS WAIVER IS A MATERIAL  INDUCEMENT  TO ENTER INTO A
BUSINESS  RELATIONSHIP,  THAT EACH HAS ALREADY  RELIED ON THE WAIVER IN ENTERING
INTO THIS  AGREEMENT,  THE NOTE AND THE OTHER LOAN  DOCUMENTS AND THAT EACH WILL
CONTINUE  TO RELY ON THE  WAIVER  IN  THEIR  RELATED  FUTURE  DEALINGS.  EACH OF
SYSTEMS,  THE  BORROWERS  AND THE  GUARANTORS  AND LENDER  FURTHER  WARRANTS AND
REPRESENTS  THAT EACH HAS REVIEWED THIS WAIVER WITH ITS LEGAL COUNSEL,  AND THAT
EACH  KNOWINGLY  AND  VOLUNTARILY   WAIVES  ITS  JURY  TRIAL  RIGHTS   FOLLOWING
CONSULTATION WITH LEGAL COUNSEL.

     10.17 Construction. Each of Systems, the Borrowers and the other Guarantors
and Lender  acknowledges that it has had the benefit of legal counsel of its own
choice and has been  afforded an  opportunity  to review this  Agreement and the
other Loan  Documents  with its legal  counsel and that this  Agreement  and the
other  Loan  Documents  shall be  construed  as if  jointly  drafted  by each of
Systems, the Borrowers and the other Guarantors and Lender.

     10.18  Counterparts;  Effectiveness.  This  Agreement  and any  amendments,
waivers,  consents, or supplements may be executed in any number of counterparts
and by different parties hereto in separate counterparts,  each of which when so
executed  and  delivered  shall  be  deemed  an  original,   but  all  of  which
counterparts  together shall  constitute but one and the same  instrument.  This
Agreement shall become  effective upon the execution of a counterpart  hereof by
each of the parties hereto.  Delivery of an executed  counterpart of a signature
page to this Agreement, to any amendments,  waivers, consents or supplements, or
to any other Loan Document by telecopier  shall be as effective as delivery of a
manually executed counterpart thereof.

     10.19  No  Duty.  All  attorneys,   accountants,   appraisers,   and  other
professional  Persons and consultants retained by Lender shall have the right to
act  exclusively in the interest of Lender and shall have no duty of disclosure,
duty of loyalty, duty of care, or other duty or obligation of any type or nature
whatsoever to Systems,  any Borrower,  any of the other Loan Parties,  or any of
the Loan Parties' shareholders or any other Person.


     10.20  Year  2000.  (a)  Each of  Systems,  the  Borrowers  and  Guarantors
represents,  warrants and covenants that it (i) is aware of the risks associated
with the date  change  from  December  31,  1999 to January  1,  2000;  (ii) has
assessed  the  related  processing   capabilities  of  its  computer  and  other
Technology  Systems (as defined below);  (iii) is taking or has taken, and shall
continue to take,  if  necessary,  appropriate  steps to prepare its Systems for
Year 2000 capability,  i.e., to assure that its Technology  Systems will operate
in a manner such that on and after January 1, 2000 the  Technology  Systems will
correctly interpret and manipulate all dates, data,  information and records, so
as to avoid  errors in  processing  or failures to operate  properly  because of
their inability to recognize  accurately the year 2000 or subsequent  dates; and
(iv) is  taking  or has  taken,  and  shall  continue  to  take,  if  necessary,
appropriate  steps  to  verify  that  the  Technology  Systems  of its  material
customers,   clients,   suppliers  and  counterparties  are  able  to  meet  the
requirements  of the Year 2000 date change.  Each of Systems,  the Borrowers and
Guarantors  further  represents,  warrants  and  covenants  that its  Technology
Systems shall have Year 2000  capability by June 30, 1999. The term  "Technology
Systems" as used in this Section shall mean all (i) computer hardware,  computer
software,  and  data  processing  systems;  (ii)  HVAC  and  other  building  or
facilities systems and equipment containing embedded microchips; and (iii) other
information technology-based systems, that, in the case of each of (i), (ii) and
(iii),  are material to the business  operations  or financial  condition of the
Systems, any Borrower or any other Loan Party.

     (b) Each of Systems,  the  Borrowers  and  Guarantors  agrees that,  at the
Lender's request,  it will provide the Lender with written  documentation of its
efforts  and  progress  with  respect to the matters  referred to in  subsection
10.21(a)  above and will also provide the Lender with  written  assurance of its
Year 2000 Technology Systems capability.


                             SECTION 11. GUARANTIES

     11.1 Guaranty.  Each Guarantor hereby jointly and severally  absolutely and
unconditionally  guaranties  to  Lender  the  full  and  prompt  payment  of all
Obligations  owed or hereafter  owing to Lender by each Borrower.  Each Borrower
hereby absolutely and  unconditionally  guarantees to Lender the full and prompt
payment  of all  Obligations  owed or  hereafter  owing to Lender by each  other
Borrower.  Notwithstanding any provision herein contained to the contrary,  each
Guarantor's and each Borrower's liability under this Section 11 (which liability
of each  Borrower is in any event in addition to amounts for which such Borrower
is primarily  liable under the other  Sections of this  Agreement  and the other
Loan  Documents)  shall be  limited to an amount not to exceed as of any date of
determination the greater of:

          (A) in the case of each Borrower and each Guarantor, the net amount of
all Loans advanced to any other Borrower under this Agreement and then re-loaned
or otherwise transferred to such Borrower or Guarantor; or

          (B) in the case of each Borrower and each Guarantor,  the amount which
could be claimed by Lender from such Borrower or Guarantor under this Section 11
without  rendering such claim voidable or avoidable under Section 548 of Chapter
11 of the  Bankruptcy  Code or under any  applicable  state  Uniform  Fraudulent
Transfer Act, Uniform Fraudulent Conveyance Act or similar statute or common law
after taking into account,  among other things,  such  Borrower's or Guarantor's
right  of  contribution  and  indemnification   from  the  other  Borrowers  and
Guarantors under subsection 11.2 hereof.

Until all  Obligations  have been paid in full, this guaranty is and is intended
to be a  continuing,  unconditional  guaranty  of  payment  of the  Obligations,
independent of and in addition to any other guaranty, endorsement, collateral or
other  agreement  now or  hereafter  held by  Lender  therefor  or with  respect
thereto, whether or not furnished by Borrowers and/or any Guarantor.

     11.2 Contribution with Respect to Guaranty Obligations.


          (A) To the extent that any Borrower or Guarantor  shall make a payment
under this Section 11 of all or any of the  Obligations  for which such Borrower
or Guarantor is not primarily liable (a "Guarantor  Payment") which, taking into
account all other Guarantor Payments then previously or concurrently made by the
other  Borrower  and  Guarantors,  exceeds  the amount  which such  Borrower  or
Guarantor  would otherwise have paid if each Borrower and Guarantor had paid the
aggregate Obligations satisfied by such Guarantor Payment in the same proportion
that such  Borrower's or Guarantor's  "Allocable  Amount" (as defined below) (in
effect  immediately  prior  to such  Guarantor  Payment)  bore to the  aggregate
Allocable Amounts of all Borrowers and Guarantors in effect immediately prior to
the making of such  Guarantor  Payment,  then such Borrower shall be entitled to
received  contribution and indemnification  payments from, and be reimbursed by,
each of the other Borrower and the Guarantors for the amount of such excess, pro
rata based upon their respective  Allocable Amounts in effect  immediately prior
to such Guarantor Payment.

          (B) As of any date of  determination,  the  "Allocable  Amount" of any
Borrower or  Guarantor  shall be equal to the maximum  amount of the claim which
could then be recovered from such Borrower or Guarantor under this subsection 11
without  rendering such claim voidable or avoidable under Section 548 of Chapter
11 of the  Bankruptcy  Code or under any  applicable  state  Uniform  Fraudulent
Transfer Act,  Uniform  Fraudulent  Conveyance Act or similar  statute or common
law.

          (C) This  subsection  11.2 is  intended  only to define  the  relative
rights of Borrowers  and  Guarantors  between them and nothing set forth in this
subsection  11.2 is intended to or shall impair the obligations of Borrowers and
Guarantors,  jointly and severally, to Lender to pay any amounts as and when the
same  shall  become  due and  payable  in  accordance  with  the  terms  of this
Agreement,   including,  without  limitation,  Section  2  hereof,  and  nothing
contained in this  subsection  11.2 shall limit the liability of any Borrower to
pay the  Obligations  for which it is  primarily  liable or of any  Borrower  or
Guarantor to pay its obligations under this Section 11.  Accordingly,  the right
of any  Borrower or Guarantor to receive any  contribution  and  indemnification
payment from, or to be reimbursed by, any other Borrower or Guarantor under this
Section 11 shall be unsecured and subordinated in right of payment to such other
Borrower's  or  Guarantor's   indebtedness  and  liability  in  respect  of  the
Obligations and obligations under this Section 11.

          (D) The parties hereto acknowledge that the rights of contribution and
indemnification  hereunder shall constitute  assets of any Borrower or Guarantor
to which such contribution and indemnification is owing.


     11.3  Obligations  Absolute.  The  liability  of each  Guarantor  and  each
Borrower to Lender under this Section 11 shall be absolute and unconditional and
shall not be affected or impaired by any of the  following  acts by Lender:  (i)
any  acceptance of collateral  security,  guarantors,  accommodation  parties or
sureties for any or all Obligations;  (ii) one or more extensions or renewals of
any  Obligations  (whether  or not for longer than the  original  period) or any
modification of the interest rates, fees,  maturities or principal amount of, or
other  contractual  terms  applicable to, any  Obligations;  (iii) any waiver or
indulgence granted to any Borrower or any other Loan Party, any delay or lack of
diligence  in the  enforcement  of  Obligations,  or any  failure  to  institute
proceedings,  file a claim,  give any required notices or otherwise  protect any
Obligations; (iv) any full or partial release of, compromise or settlement with,
or agreement  not to sue any Borrower or any other Loan Party,  or any guarantor
or other person liable in respect of any Obligations;  (v) the acceptance of any
instrument in renewal or  substitution  of any  Obligation;  (vi) any failure to
obtain collateral security (including rights of setoff) for any Obligations,  or
to obtain or maintain the proper or sufficient  creation and perfection thereof,
or to establish the priority thereof, or to preserve, protect, insure, care for,
exercise or enforce any collateral  security;  or any modification,  alteration,
substitution,  exchange, surrender, cancellation,  termination, release or other
change,  impairment,  limitation,  loss or discharge of any collateral security;
(vii)  any  assignment,  pledge  or other  transfer  of any  Obligations  or any
evidence  thereof;  or (viii) any manner,  order or method of application of any
payments or credits upon  Obligations.  Each Guarantor and each Borrower  hereby
waives any and all defenses and discharges available to a surety,  guarantor, or
accommodation co-obligor,  other than payment in full in cash of the Obligations
and termination of the Commitment pursuant thereto.

     11.4 WAIVER.  EACH GUARANTOR AND EACH BORROWER  HEREBY WAIVES  PRESENTMENT,
DEMAND  FOR  PAYMENT,  NOTICE OF  DISHONOR  OR  NONPAYMENT,  AND  PROTEST OF ANY
INSTRUMENT EVIDENCING LIABILITIES.

     11.5 Recovery.  If any payment is applied by Lender to the  Obligations and
is hereafter set aside, recovered,  rescinded or required to be returned for any
reason   (including,   without   limitation,   the  bankruptcy,   insolvency  or
reorganization  of any Borrower or any other obligor),  the Obligations to which
such payment was applied  shall for the purposes of this Section 11 be deemed to
have continued in existence or shall be reinstated, notwithstanding such payment
and  application  and this  guaranty by the  Borrowers  and  Guarantors  in this
Section  11  shall be  enforceable  as to such  Obligations  as fully as if such
payment and application had never been made.

     11.6  Liability  Cumulative.  The liability of the Guarantors and Borrowers
under  this  Section  11 is in  addition  to and  shall be  cumulative  with all
liabilities  of each  Guarantor and each Borrower to Lender under this Agreement
and the other Loan  Documents to which any such Borrower or Guarantor is a party
or in respect of any  Obligations of the other  Borrower or Guarantors,  without
any limitation as to amount,  unless the  instrument or agreement  evidencing or
creating such other liability specifically provides to the contrary.


                            [SIGNATURE PAGE FOLLOWS]


     WITNESS  the  due  execution  of  this  Agreement  by the  respective  duly
authorized officers of the undersigned as of the date first written above.

Systems:                                    GSE SYSTEMS, INC.


                                            By:
                                               ---------------------------------
Borrowers:                                  GSE POWER SYSTEMS, INC.


                                            By:
                                               ---------------------------------


                                            GSE PROCESS SOLUTIONS, INC.


                                            By:
                                               ---------------------------------

Other
Guarantors:                                 MSHI, INC.



                                            By:
                                               ---------------------------------

                                            GP INTERNATIONAL ENGINEERING &
                                            SIMULATION, INC.


                                            By:
                                               ---------------------------------

                                            DIME COMMERCIAL CORP.


                                            By:
                                               ---------------------------------

                                            Title:
                                                  ------------------------------


                                            Revolving Loan Commitment:

                                            $9,000,000
                                            ----------
                       [Signature page to Loan Agreement]

STATE OF NEW YORK )
                  )  SS
COUNTY OF NEW YORK )

     I, Paul R. Wiener,  a Notary  Public in and for said  County,  in the State
aforesaid, DO HEREBY CERTIFY that _______________,  personally known to me to be
the  _________________  of Dime  Commercial  Corp.,  the person who executed the
foregoing  instrument,  who being by me duly sworn, did depose and say he is the
officer  of such  corporation  described  in and which  executed  the  foregoing
instrument;  that said  instrument  is signed on behalf of such  corporation  by
order of its Board of Directors;  and that he acknowledged said instrument to be
the free act and deed of such corporation.

       GIVEN under my hand and notarial seal this 4th day of June, 1999.



                                     ___________________________________________
                                                     Notary Public

                                     My commission expires:

                                     ___________________________________________



STATE OF NEW YORK )
                  )  SS
COUNTY OF NEW YORK )

     I, Paul R. Wiener,  a Notary  Public in and for said  County,  in the State
aforesaid,  DO HEREBY  CERTIFY  that______________________________  , personally
known to me to be a ____________________  of each of the person who executed the
foregoing instrument,  who being by me duly sworn, did depose and say he is a of
each such corporation  described in and which executed the foregoing instrument;
that said  instrument is signed on behalf of each such  corporation  by order of
its respective Board of Directors;  and that he acknowledged  said instrument to
be the free act and deed of each such corporation.

       GIVEN under my hand and notarial seal this 4th day of June, 1999.


                                     ___________________________________________
                                                    Notary Public

                                     My commission expires:

                                     ___________________________________________

    All following  exhibits and  schedules  are  available  upon request and are
    filed in hard copy with the SEC.

                                    EXHIBITS

     A.       Borrowing Base Certificate
     B.       Compliance Certificate
     C.       Reconciliation Report
     D.       Notice of Borrowing

                                   SCHEDULES

     1.1(A)            Other Liens
     1.1(B)            Pro Forma
     2.15              Government Accounts
     3.1(A)            List of Closing Documents
     4.1(B)            Capitalization of Loan Parties, etc.
     4.2               Consents
     4.4               Other Indebtedness
     4.6               Trade Names (Present and Past Five Years)
     4.7               Location of Principal Place of Business, Books and
                         Records and Collateral; FEIN
     4.9               Litigation
     4.10              Audits
     4.13              Intellectual Property
     4.20              Bank Accounts
     4.22              Employee Matters
     4.24              Leases with a term exceeding 5 years