NICHOLS SELECT CORPORATION




                                  H. GREY WOOD

                              EMPLOYMENT AGREEMENT





                             Dated: August 29, 1997                     



                              EMPLOYMENT AGREEMENT


         THIS  AGREEMENT is entered into on the 29th day of August, 1997,  by H.
Grey Wood, residing at 3549 Chippenham, Birmingham, Alabama 35242 (herein called
the  "Employee"),  and Nichols  SELECT  Corporation,  with a principal  place of
business  located at 4040  Memorial  Parkway  South,  Huntsville,  Alabama 35802
(herein called  "SELECT").  Unless  otherwise  defined,  capitalized  terms used
herein shall have the meaning  ascribed to such terms in the Merger Agreement as
hereinafter defined.

                              W I T N E S S E T H:

         WHEREAS,  Nichols Research Corporation ("NRC"),  SELECT, a wholly owned
subsidiary of NRC, TXEN, Inc. ("TXEN"), and the holders of all of the $0.002 par
value Class A Common  Stock of TXEN (the  "Shareholders")  have entered into and
consummated  an  Agreement  of Merger  dated as of August 27, 1997 (the  "Merger
Agreement") whereby TXEN merged with and into SELECT;

         WHEREAS, the Employee's continued employment with SELECT was a material
inducement to SELECT and NRC to enter into the Merger Agreement;

         WHEREAS,  Employee  owned Class A Common  Stock of TXEN and  received a
portion of the Merger Consideration;

         WHEREAS,   SELECT  is  engaged   in  the   business   of  health   care
administration  and  providing  information  systems and services to health care
providers and administrators throughout the United States; and

         WHEREAS,  SELECT desires to obtain the services of the Employee as Vice
President  and General  Manager of SELECT and the  Employee is willing to render
such services to SELECT upon the terms and conditions herein set forth;

         NOW,  THEREFORE,  in  consideration  of the mutual  promises  set forth
herein and other good and valuable consideration, the receipt of which is hereby
acknowledged, the parties agree as follows:

1.       Duties and Salary.





         (a) SELECT  agrees to employ the Employee  and the  Employee  agrees to
accept  employment by SELECT on a full-time  basis as Vice President and General
Manager of SELECT at a base salary of $10,416.67  per month plus such  incentive
compensation  as the Board of  Directors of SELECT (the  "Board") may  determine
payable during the Term of Employment, as hereinafter defined. Such salary shall
be subject to increases from time to time as authorized by the Board.

         (b) The  Employee  hereby  agrees to  undertake  such  travel as may be
required in the performance of his duties. The reasonable travel expenses of the
Employee shall be reimbursed in accordance with SELECT's  reimbursement  policy,
in effect from time to time.
         (c)  The  Employee  shall  carry  out  his  duties  under  the  general
supervision of the Board or its designee.

         (d) The Employee's duties shall include the duties and responsibilities
identified on Schedule I attached hereto.  The Employee shall perform such other
tasks and  duties as may be  assigned  by  SELECT,  from time to time and SELECT
reserves the right to change the office and/or  position of the Employee  within
SELECT, so long as such change is mutually acceptable. The Employee shall devote
his full time, attention,  skill and efforts to the tasks and duties assigned by
SELECT. The Employee shall not provide services, for compensation,  to any other
person or  business  entity  while  employed by SELECT  without  approval of the
Board.

         (e)  The  Employee  shall  not  be  required  to  relocate  beyond  the
Birmingham, Alabama, metropolitan area without his consent.

2. Term of Employment. This Agreement shall commence as of the effective date of
the Merger Agreement and shall end two years from the date thereof (the "Term of
Employment"),  unless  terminated  earlier or extended as provided herein.  Upon
expiration  of the initial  Term of  Employment  unless  earlier  terminated  as
provided   herein,   the  Term  of  Employment   shall  continue   automatically
month-to-month  until terminated by either party with at least thirty (30) days'
prior written notice with or without cause.

3. Termination  Before Expiration of Term of Employment.  The termination of the
employment of the Employee during the Term of Employment may occur in one of the
following ways:

         (a) By SELECT,  for Cause.  Termination by SELECT shall be deemed to be
for cause only upon:

               (i)      Employee's conviction of or pleading guilty to a felony;

               (ii)     A good  faith  determination  by the  Board  that the
                        Employee  has breached  this  Agreement or the Merger
                        Agreement;

               (iii)    Refusal   or  failure   by  the   Employee,   without
                        reasonable excuse or proper  authorization,  to carry
                        out  any   reasonable   instructions   of  the  Board
                        consistent  with  Employee's  rights or duties as set
                        forth in this Agreement;






                  (iv)     Material  breach of this  Agreement  or any  material
                           breach of any agreement with SELECT or NRC;

                  (v)      The Employee's demonstration of negligence or willful
                           misconduct in the execution of his duties,  including
                           without  limitation  breach of fiduciary  duty or the
                           duty of loyalty owed SELECT.

         If SELECT  intends to terminate for cause,  SELECT shall provide notice
to Employee  of intent to  terminate  this  Agreement,  stating the  termination
provision in this Agreement  relied upon and setting forth in reasonable  detail
the facts and circumstances claimed to provide a basis for termination under the
provisions so indicated,  and shall provide Employee with an opportunity to cure
the alleged  default or breach within thirty (30) days of receipt of the notice,
provided  that if the matter is not curable  within such thirty (30) day period,
the  Employee  shall  not  be  deemed  in  default  if  the  Employee  commences
immediately  to cure the matter and proceeds  diligently  thereafter to complete
the cure,  further  provided  that the alleged  breach or default  must be cured
within  ninety (90) days of receipt of the notice.  SELECT shall not be required
to give more than one notice with  respect to the same  matter.  Notwithstanding
the  foregoing,  no notice and no cure right shall be required  with  respect to
termination  for cause under 3(a)(i) or an act involving theft of information or
property of SELECT.

         (b) By SELECT, Without Cause. Any termination of Employee by SELECT for
reasons other than as set forth in  subsections  3(a)(i)  through  3(a)(v) above
shall be a termination  without  cause.  SELECT may terminate the  employment of
Employee without cause by thirty (30) days prior written notice at any time.

         (c) By the Employee.  The Employee may by written notice  terminate his
employment at any time during the Term of Employment:

          (i) For any reason other than for Good Reason (as defined  below) upon
     thirty (30) days prior  written  notice at any time.   

          (ii) For "Good Reason,"  defined as termination  because of a material
     breach by SELECT of this Agreement including,  without limitation,  making 
     a material change in the Employee's duties, responsibilities,  or authority
     as  set forth  in this Agreement,  without  his  express  written  consent.
     In all cases in  which Employee  intends to terminate for Good Reason,  the
     Employee shall   provide  SELECT  with  notice  of intent to terminate this
     Agreement, stating   the facts and  circumstances  giving  rise to a breach
     of this  Agreement  claimed  to provide a basis for  termination  under the
     provisions so  indicated,   and shall  provide  SELECT with an  opportunity
     to cure the alleged  default or breach  within  thirty (30) days of receipt
     of the  notice,  provided  that if  the matter  is  not curable within such
     thirty (30) day   period,  SELECT   shall   not  be deemed in default if it
     commences immediately to cure the matter and proceeds diligently thereafter
     to complete the cure, further provided that the  alleged  breach or default
     must be cured  within  ninety (90) days of receipt of the notice. Employee
     shall not be required to give more than one such notice with respect to the
     same matter.

         (d)      Death of the Employee.

         (e)      Disability of Employee.  If, during the Term of Employment,  a
                  physician  selected by SELECT determines that the Employee has
                  become  physically or mentally  disabled so as to be unable to
                  carry out the normal and usual  duties of his  employment  for
                  three (3)  continuous  months,  and  reasonable  accommodation
                  cannot be made to allow the  Employee  to  continue to perform
                  his  duties  full-time,   his  employment   hereunder  may  be
                  terminated at the election of SELECT or the Employee.

4.  Consequences of  Termination.  The termination of the employment of Employee
will cause the following results:

         (a) If the  termination  is by SELECT for cause,  or is by the Employee
for any reason other than for Good Reason,  SELECT will pay the Employee  within
five (5) days after the date of termination any unpaid salary, the amount of any
accrued annual vacation pay to which he may be entitled under SELECT's  vacation
plan and  benefits.  All such  compensation  and benefits (if any) shall be paid
only through the date termination occurs.

         (b) If the  termination  is by SELECT without cause or because of death
or disability,  SELECT shall pay to the Employee, in addition to the amounts set
forth in 4(a) above, an amount equal to the Employee's  monthly base salary then
in effect over a six-month period immediately following the termination.

         (c) If the termination is by the Employee for Good Reason, SELECT shall
pay to the  Employee,  in addition  to the  amounts set forth in 4(a) above,  an
amount  equal to the  Employee's  monthly  base  salary  then in  effect  over a
six-month period immediately following the termination.

         (d) In the event of the Employee's  death or disability,  the following
provisions will apply:

                  (i)      Upon  his  death,  the  Employee's   estate  will  be
                           entitled  to receive  the amount set forth in Section
                           4(b)  and the  benefits  set  forth  in any  plans of
                           SELECT  then  in  effect  and  applicable  under  the
                           circumstances.  The  Employee or his estate  shall be
                           entitled to no other  compensation or benefits in the
                           event of death.






                  (ii)     Upon  termination on account of disability,  Employee
                           will be  entitled  to receive the amount set forth in
                           Section  4(b) and the benefits set forth in any plans
                           of SELECT  then in effect  and  applicable  under the
                           circumstances.   The   Employee   or   his   personal
                           representative   shall  be   entitled   to  no  other
                           compensation or benefits in the event of disability.

         (e) The  Employee  shall not be  required  to  mitigate  the  amount of
payment provided for in this Section 4 by seeking employment.

         (f) The  amounts  set forth  above in this  Section 4 shall be paid and
received in complete  discharge  of any other  obligation  of SELECT to Employee
resulting from termination of his employment.

5.       Fringe Benefits.

         The Employee shall participate in any group health insurance,  vacation
and sick leave plans,  and other  benefit  plans  available to all  employees of
SELECT in  accordance  with their terms and  conditions  which may be amended or
terminated by SELECT at any time.  Effective on August 31, 1997,  Employee shall
receive an incentive  stock option grant to purchase  8,000 shares of NRC Common
Stock under the terms and provisions of the Nichols  Research  Corporation  1991
Incentive Stock Option Plan.

6.       Nondisclosure Covenants and Proprietary Matters.

         (a) Unless authorized or instructed in writing by SELECT,  the Employee
shall not, except as required in the conduct of SELECT's business,  during or at
any time  after the Term of  Employment,  disclose  to  others,  or use,  any of
SELECT's  inventions or discoveries or their  respective  secret or confidential
information  or data  (oral,  written,  or in machine  readable  form) which the
Employee may obtain  during the course of or in connection  with the  Employee's
employment,  including such inventions,  discoveries,  information,  know-how or
data relating to machines,  equipment,  products, systems, software,  contracts,
contract  performance,   research  and/or  development,  designs,  compositions,
formulae,  processes,  manufacturing  procedures or business methods, whether or
not  developed by the  Employee,  by others in SELECT or obtained by SELECT from
third parties, and irrespective of whether or not such inventions,  discoveries,
information,  knowledge  or data  have  been  identified  by SELECT as secret or
confidential,  unless and  until,  and then to the extent and only to the extent
that,  such  inventions,  discoveries,  information,  knowledge  or data  become
available to the public otherwise than by the Employee's act or omission.






         (b) The  Employee  shall  not,  except as  required  in the  conduct of
SELECT's business, disclose to others, or use, any of the information (which, if
disclosed  or  used,  could  be  harmful  to  SELECT  relating  to  present  and
prospective  customers  of  SELECT,   business  dealings  with  such  customers,
prospective sales and advertising  programs and agreements with  representatives
or prospective  representatives  of SELECT,  present or  prospective  sources of
supply or any other business  arrangements of SELECT,  including but not limited
to customers,  customer lists, costs,  prices and earnings,  whether or not such
information  is  developed by the  Employee,  by others in SELECT or obtained by
SELECT from third parties,  and  irrespective of whether or not such information
has been identified by SELECT as secret or  confidential,  unless and until, and
then to the  extent  and  only to the  extent  that,  such  information  becomes
available to the public otherwise than by the Employee's act or omission.

         (c) The  Employee  agrees  to  disclose  immediately  to  SELECT or any
persons  designated by it and to assign to SELECT or its  successors or assigns,
all inventions made,  discovered,  or first reduced to practice by the Employee,
solely or jointly with others,  during the Term of Employment or within a period
of six months from the date of termination of such employment  (either during or
outside of the Employee's working hours and either on or off SELECT's premises),
which inventions are made,  discovered or conceived either in the course of such
employment, or with the use of SELECT's time, material,  facilities or funds, or
which are directly related to any  investigations  or obligations  undertaken by
SELECT;  and the Employee  hereby grants and agrees to grant the right to SELECT
and its nominees to obtain, for its own benefit and in its own name (entirely at
its expense) patents and patent applications  including original,  continuation,
reissue,  utility and design  patents,  and  applications,  patents of addition,
confirmation patents,  registration patents, petty patents,  utility models, and
all other types of patents and the like,  and all renewals and extensions of any
of them for those  inventions in any and all  countries;  and the Employee shall
assist SELECT,  at SELECT's  expense,  without further charge during the term of
the Employee's employment, and after termination of the Employee's employment at
the same  base  salary  rate  (excluding  any  bonuses,  incentive  or  deferred
compensation  or other benefits and based upon a forty hour work week) as during
the last year of the  Employee's  employment  (determined on an hourly basis for
this purpose),  through counsel  designated by SELECT, to execute,  acknowledge,
and deliver all such further papers,  including  assignments,  applications  for
Letters  Patent  (of  the  United  States  or of any  foreign  country),  oaths,
disclaimers  or other  instruments  and to perform such further acts,  including
giving  testimony  or  furnishing  evidence  in the  prosecution  or  defense of
appeals,  interferences,  suits  and  controversies  relating  to any  aforesaid
inventions as may  reasonably  be deemed  necessary by SELECT or its nominees to
effectuate  the vesting or  perfecting  in SELECT or its  nominees of all right,
title  and  interest  in and  to  said  inventions,  applications  and  patents.
Notwithstanding the foregoing,  the Employee need not take any action called for
under  this  Section  6(c)  which  will cause  undue  personal  hardship  to the
Employee.






         (d) The  Employee  agrees  to  disclose  immediately  to  SELECT or any
persons  designated  by it and to  assign  to  SELECT,  at  its  option,  or its
successors or assigns, all works of authorship, including all writings, computer
programs,  software, and firmware,  written or created by the Employee solely or
jointly  with  others,  during the course of his  employment  by SELECT  (either
during or outside of the Employee's  working hours and either on or off SELECT's
premises),  which  works  are made or  conceived  either  in the  course of such
employment, or with the use of SELECT's time, material,  facilities or funds, or
which are directly related to any  investigations  or obligations  undertaken by
SELECT;  and the Employee  hereby  agrees that all such works are works made for
hire,  of which  SELECT is the  author  and the  beneficiary  of all  rights and
protections  afforded by the law of copyright in any and all countries;  and the
Employee will assist SELECT at SELECT's  expense  without further charges during
the term of his employment,  and after termination of his employment at the same
base salary rate (excluding any bonuses,  incentive or deferred  compensation or
other  benefits)  as during the last year of his  employment  (determined  on an
hourly basis for this purpose assuming a forty hour work week),  through counsel
designated  by SELECT,  to execute,  acknowledge,  and deliver all such  further
papers,  including assignments,  applications for copyright registration (in the
United  States  or  in  any  foreign  country),   oaths,  disclaimers  or  other
instruments,  and to perform such further acts,  including  giving  testimony or
furnishing  evidence in the  prosecution  or defense of appeals,  interferences,
suits  and  controversies  relating  to any  aforesaid  works,  as may be deemed
necessary by SELECT or by its nominees to  effectuate  the vesting or perfecting
in SELECT or its  nominees  of all rights and  interest in and to said works and
copies thereof, including the exclusive rights of copying and distribution.

         (e) The Employee shall keep complete,  accurate and authentic accounts,
notes, data and records of all inventions made,  discovered or developed and all
works of  authorship  written or created by the  Employee  as  aforesaid  in the
manner and form requested by SELECT.

         (f)  All  computer  or  other  hardware,  computer  software,  computer
programs, source codes, object codes, magnetic tapes, printouts, samples, notes,
records, reports, documents,  customer lists, photographs,  catalogues and other
writings,  whether  copyrightable  or not,  relating to or dealing with SELECT's
business and plans, and those of others entrusted to SELECT,  which are prepared
or created by the Employee or which may come into his possession  during or as a
result of his employment,  are the property of SELECT,  as applicable,  and upon
termination of his  employment,  the Employee agrees to return all such computer
software,  computer  programs,  source  codes,  object  codes,  magnetic  tapes,
printouts,   samples,  notes,  records,  reports,  documents,   customer  lists,
photographs, catalogues and writings and all copies thereof to SELECT.

7.  Nonsolicitation  and  Noncompetition.  During  the  Restriction  Period  (as
hereinafter defined) within the United States of America, the Employee shall not
directly or indirectly:

         (a) Solicit the  business of SELECT from any  customer of SELECT or any
entity  controlled  by SELECT or solicit  any  employees  of SELECT to leave the
employ of SELECT.

         (b) Hire any  employees  or former  employees  of SELECT or any  entity
controlled  by  SELECT  within  one  year  of the  date  of  termination  of his
employment with SELECT or cause any entity with which the Employee is affiliated
to hire any such  employees  or former  employees  of SELECT  unless such former
employee has not been employed by SELECT within 180 days of the hire date.






         (c)  Engage  in,  represent  in  any  way  or  be  connected  with,  as
consultant,   officer,   director,   partner,  employee,  sales  representative,
proprietor,  stockholder  or otherwise  (except for the ownership of a less than
one percent (1%) stock interest in a publicly traded  corporation where Employee
is not in a management or control  position),  any business  competing  with the
business  of SELECT as  conducted  by  SELECT on the date  hereof or during  the
period of Employee's employment by SELECT.

         (d) As used herein,  the Restriction Period shall mean the period while
the  Employee is  employed  by SELECT and twelve (12) months  after the date the
employee ceases to be employed by SELECT.

8. No Conflict.  Employee  represents  and warrants that he is not a party to or
otherwise  subject  to or  bound  by the  terms of any  contract,  agreement  or
understanding which in any manner would limit or otherwise affect his ability to
perform his obligations  hereunder,  including without  limitation any contract,
agreement or understanding containing terms and provisions similar in any manner
to those contained in Sections 6 and 7 hereof.  Employee  covenants to indemnify
and hold  SELECT  and any of its  affiliates  harmless  from any cost or damages
(including  attorneys'  fees and  expenses)  resulting  from any  breach  of the
provisions of this Agreement.

9.       Survival of Covenants, Effect.

         (a) The covenants on the part of the Employee  contained or referred to
in Sections 6 and 7 above shall survive  termination of this Agreement,  and the
existence  of any  claim or cause of  action  of the  Employee  against  SELECT,
whether  predicated on this Agreement or otherwise.  The Employee  agrees that a
remedy at law for any breach of the foregoing covenants contained or referred to
in Sections 6 and 7 would be  inadequate,  that SELECT would suffer  irreparable
harm as a result and that SELECT shall be entitled to a temporary  and permanent
injunction or an order for specific  performance of such  covenants  without the
necessity of proving actual damage to SELECT and without the posting of any bond
or other security.  Any breach of this Agreement by SELECT shall not release the
Employee from his obligations under Sections 6 and 7 hereof.

         (b) The Employee  hereby  represents  and  acknowledges  that SELECT is
relying on the covenants in Sections 6 and 7 in entering into this Agreement and
the  Merger  Agreement  and  other  agreements  related  thereto  and  that  the
restrictions  in  Sections  6  and 7  are  fair  and  reasonable.  The  Employee
acknowledges that SELECT does business throughout the United States and that the
geographic  scope of the  covenants  in Section 7 is  therefore  reasonable  and
necessary to protect the interests of SELECT.






         (c) It is the intent of the parties that the  provisions  of Sections 6
and 7 shall be  enforced to the fullest  extent  permissible  under the laws and
public  policies of each  jurisdiction  in which  enforcement is sought.  If any
particular  provision of Sections 6 and 7 shall be  adjudicated to be invalid or
unenforceable,  such provision(s) of Sections 6 and 7 shall be deemed amended to
provide  restrictions  to the fullest extent  permissible  and  consistent  with
applicable law and policies, and such amendment shall apply only with respect to
the particular  jurisdiction in which such  adjudication is made. If such deemed
amendment is not allowed by the  adjudicating  body,  the  offending  provision,
only,  shall be  deleted  and the  remainder  of  Sections  6 and 7 shall not be
affected.

10.      Assignment.

         The rights  and  obligations  of SELECT  under  this  Agreement  may be
assigned by SELECT to any other successors in interest of SELECT of that part of
the business of SELECT to which this  Agreement  applies or to their  respective
affiliates.  This  Agreement  may not be assigned and any duties of the Employee
may not be delegated by the Employee, but any amounts owing to the Employee upon
his death shall inure to the benefit of his estate.

11.      Notices.

         All notices or other  communications which may be or are required to be
given,  served  or sent by  either  party to the other  party  pursuant  to this
Agreement  shall be in  writing,  addressed  to  its/his  residence  or place of
business as set forth above, and shall be mailed by first-class  certified mail,
return receipt requested, postage prepaid; next-day air delivery; or transmitted
by  facsimiles or hand  delivery.  Such notice or other  communication  shall be
deemed  sufficiently  given,  served,  sent or received for all purposes at such
time as it is delivered to the  addressee or at such time as delivery is refused
by the  addressee  upon  presentation.  Each  party may  designate  by notice in
writing an address to which any notice or  communication  may  thereafter  be so
given,  served or sent. Notices hand delivered to SELECT must be delivered to an
officer of SELECT and all other  notices  shall be sent to the  attention of the
Board.

12.      Applicable Law Jurisdiction.

         This  Agreement  has  been  negotiated  and  executed  in the  State of
Alabama,  and it shall be governed by, construed and enforced in accordance with
the  internal  substantive  laws and not the choice of law rules of the State of
Alabama.

13. Effectiveness/Interpretation.

         The  parties  acknowledge  and  agree  that  this  Agreement  has  been
negotiated  at  arm's  length  between   parties   equally   sophisticated   and
knowledgeable in the matters dealt with herein.  Each party has been represented
by counsel  of its or his own  choosing.  Accordingly,  any rule of law or legal
decision that would require  interpretation  of any ambiguities in the Agreement
against the party that drafted it is not applicable and is waived.

14.      Severability.

         If any of the articles, sections,  paragraphs, clauses or provisions of
this  Agreement  shall  be held by a court of last  resort  to be  invalid,  the
remainder of this Agreement shall not be affected thereby.






15.      Entire Agreement.

         The  foregoing  contains  the  entire  agreement  between  the  parties
relating  to the  subject  matter of this  Agreement,  and may not be altered or
amended except by an instrument in writing  approved by SELECT and signed by the
parties  hereto,  and this  Agreement  supersedes all prior  understandings  and
agreements  relating  to  employment  of the  Employee  by SELECT.  The  parties
acknowledge  that any prior oral or written  agreements  between  SELECT and the
Employee, if any, are hereby terminated.

         IN WITNESS WHEREOF,  SELECT has caused this Agreement to be executed by
its duly  authorized  officers  and the Employee has hereunto set his hand as of
the date first above written.


                           NICHOLS SELECT CORPORATION


                         By:Michael J. Mruz
                            ---------------
                           Its:Chief Executive Officer
                               -----------------------

                         H. Grey Wood
                         -------------------------------
                         H. Grey Wood, Employee

NOTE:  Schedules available upon request.