1


                                                                    Exhibit 99.6


                              EMPLOYMENT AGREEMENT
                              --------------------

         This Agreement made as of the 1st day of October, 1999, between EG&G,
Inc., a Massachusetts corporation (hereinafter called the "Company"), and Patrik
Dahlen, 26 Thornhill Court, Danville, CA 94526 (hereinafter referred to as the
"Employee").

                                  WITNESSETH:
                                  ----------

         WHEREAS, the Employee is being employed in a management position with
the Company; and

         WHEREAS, the Employee hereby agrees to continue to perform such
services and duties of a management nature as shall be assigned to him; and

         WHEREAS, the Employee hereby agrees to the compensation herein provided
and agrees to serve the Company to the best of his ability during the period of
this Agreement.

         NOW, THEREFORE, in consideration of the sum of One Dollar, and of the
mutual covenants herein contained, the parties agree as follows:

1.       a)       Except as hereinafter otherwise provided, the Company agrees
                  to employ the employee in a management position with the
                  Company, and the Employee agrees to remain in the employment
                  of the Company in that capacity for a period of one year from
                  the date hereof and from year to year thereafter until such
                  time as this Agreement is terminated.

         b)       The Company will, during each year of the term of this
                  Agreement, place in nomination before the Board of Directors
                  of the Company the name of the Employee for election as an
                  Officer of the Company except when a notice of termination has
                  been given in accordance with Paragraph 5(b).

2.       The Employee agrees that, during the specified period of employment, he
         shall, to the best of his ability, perform his duties, and shall devote
         his full business time, best efforts, business judgment, skill and
         knowledge to the advancement of the Company and its interests and to
         the discharge of his duties and responsibilities hereunder. The
         Employee shall not engage in any business, profession or occupation
         which would conflict with the rendition of the agreed-upon services,
         either directly or indirectly, without the prior approval of the Board
         of Directors, except for personal investment, charitable and
         philanthropic activities.

                                       1
                              Employment Agreement




   2


3.       During the period of his employment under this Agreement, the Employee
         shall be compensated for his services as follows:

         a)       Except as otherwise provided in this Agreement, he shall be
                  paid a salary during the period of this Agreement at a base
                  rate to be determined by the Company on an annual basis.
                  During assignment outside United States that salary shall be
                  paid in local currency. The salary in dollars shall be
                  converted to local currency by using the exchange rate of the
                  date the salary decision was issued. Except as provided in
                  Subparagraph 3d, such annual base salary shall under no
                  circumstances be fixed at a rate below the annual base rate
                  then currently in effect;

         b)       He shall be reimbursed for any and all monies expended by him
                  in connection with his employment for reasonable and necessary
                  expenses on behalf of the Company in accordance with the
                  policies of the Company then in effect;

         c)       He shall be eligible to participate under any and all bonus,
                  benefit, pension, compensation, and option plans which are, in
                  accordance with company policy, available to persons in his
                  position (within the limitation as stipulated by such plans).
                  Such eligibility shall not automatically entitle him to
                  participate in any such plan;

         d)       If, because of adverse business conditions or for other
                  reasons, the Company at any time puts into effect salary
                  reductions applicable at a single rate to all management
                  employees of the Company generally, the salary payments
                  required to be made under this Agreement to the Employee
                  during any period in which such general reduction is in effect
                  may be reduced by the same percentage as is applicable to all
                  management employees of the Company generally. Any benefits
                  made available to the Employee which are related to base
                  salary shall also be reduced in accordance with any salary
                  reduction.

4.

         a)       So long as the Employee is employed by the Company and for a
                  period of one year after the termination of expiration of
                  employment, the Employee will not directly or indirectly: (i)
                  as an individual proprietor, partner, stockholder, officer,
                  employee, director, joint venturer, investor, lender, or in
                  any other capacity whatsoever (other than as the holder of not
                  more than one percent (1%) of the total outstanding stock of a
                  publicly held company), engage directly or indirectly in any
                  business or entity which competes with the business conducted
                  by the Company or its affiliates in any city or geographic
                  area in which the company or

                                       2
                              Employment Agreement




   3


                  its affiliates conduct material operations at the time of
                  termination of employment under this Agreement, except as
                  approved in advance by the Board after full and adequate
                  disclosure; or (ii) recruit, solicit or induct, or attempt to
                  induce, any employee or employees of the company to terminate
                  their employment with, to otherwise cease their relationship
                  with, the Company; or (iii) solicit, divert or take away, or
                  attempt to divert or to take away, the business or patronage
                  of any of the clients, customers or accounts, of the Company
                  that were contacted, solicited or served by the Employee while
                  employed by the Company.

         b)       If any restriction set forth in this Section 4 is found by any
                  court of competent jurisdiction to be unenforceable because it
                  extends for too long a period of time or over too great a
                  range of activities or in too broad a geographical area, it
                  shall be interpreted to extend only over the maximum period of
                  time, range of activities or geographic area as to which it
                  may be enforceable.

         c)       The restrictions contained in this Section 4 are necessary for
                  the protection of the business and goodwill of the Company and
                  are considered by the Employee to be reasonable for such
                  purpose. The Employee agrees that any breach of this Section 4
                  will cause the Company substantial and irrevocable damage and
                  therefore, in the event of any such breach, in addition to
                  such other remedies which may be available, the Company shall
                  have the right to seek specific performance and injunctive
                  relief.

         d)       The Employee agrees to sign and be bound by the Employee
                  Patent and Proprietary Information Utilization Agreement in
                  the form attached hereto.

         e)       During the period of his employment by the Company or for any
                  period during which the Company shall continue to pay the
                  Employee his salary under this Agreement, whichever shall be
                  longer, the Employee shall not in any way whatsoever aid or
                  assist any party seeking to cause, initiate or effect a Change
                  in Control of the Company as defined in Paragraph 6 without
                  the prior approval of the Board of Directors.

5.       Except for the Employee covenants set forth in Paragraph 4 which
         covenants shall remain in effect for the periods stated therein, and
         subject to Paragraph 6, this Agreement shall terminate upon the
         happening of any of the following events and (except as provided
         herein) all of the Company's obligations under this Agreement,
         including, but not limited to, making payments to the Employee shall
         cease and terminate:

         a)       On the effective date set forth in any resignation submitted
                  by the Employee and accepted by the Company, or if no
                  effective date is agreed upon, the date of

                                       3
                              Employment Agreement




   4

                  receipt of such resignation letter;

         b)       One year after written notice of termination is given by the
                  Company to the Employee;

         c)       At the death of the Employee;

         d)       At the termination of the Employee for cause. As used in the
                  Agreement, the term "cause" shall mean:

                  i)       Misappropriating any funds or property of the
                           Company;

                  ii)      Unreasonable refusal to perform the duties assigned
                           to him under this Agreement;

                  iii)     Conviction of a felony;

                  iv)      Continuous conduct bringing notoriety to the Company
                           and having an adverse effect on the name or public
                           image of the Company;

                  v)       Violation of the Employee's covenants as set forth in
                           Paragraph 4 above; or

                  vi)      Continued failure by the Employee to observe any of
                           the provisions of this Agreement after being informed
                           of such breach.

         e)       Twelve months after written notice of termination (a
                  "Disability Termination Notice") is given by the Company to
                  the Employee based on a determination by the Board of
                  Directors that the Employee is disabled (which, for purposes
                  of this Agreement, shall mean that the Employee is unable to
                  perform his regular duties, with such determination to be made
                  by the Board of Directors, in reliance upon the opinion of the
                  Employee's physician or upon the opinion of one or more
                  physicians selected by the Company). A Disability Termination
                  Notice shall be deemed properly delivered if given by the
                  Company to the Employee on the 184th day of continuous
                  disability of the Employee. Notwithstanding the foregoing, if,
                  during the twelve-month period following proper delivery of a
                  Disability Termination Notice as aforesaid, the Employee is no
                  longer disabled and is able to return to work, such Disability
                  Termination Notice shall be deemed automatically rescinded
                  upon the Employee's return to work, and the employment of the
                  Employee shall continue in accordance with the terms of this
                  Agreement. During the first 184 days of continuous disability
                  of the Employee, the Company will make periodic payments to
                  the Employee in an amount equal to the difference between his
                  base salary and the

                                       4
                              Employment Agreement




   5



                  benefits received by the Employee under the Company's
                  Short-Term Disability Income Plan or comparable international
                  plan. During the twelve-month period following proper delivery
                  of a Disability Termination Notice as aforesaid, the Company
                  will make periodic payments to the Employee in an amount equal
                  to the difference between his base salary and the benefits
                  provided by the Company's Long-Term Disability Plan. If any
                  payments to the Employee under the Company's Long-Term
                  Disability Plan or comparable international plan are not
                  subject to federal income taxes, the payments to be made
                  directly by the Company pursuant to the preceding sentence
                  shall be reduced such that the total amount received by the
                  Employee (from the Company and from the Long-Term Disability
                  Plan), after payment of any income taxes, is equal to the
                  amount that the Employee would have received had he been paid
                  his base salary, after payment of any income taxes on such
                  base salary.

         f)       In the event of the termination of the Employee by the Company
                  pursuant to paragraph 5(b) above, the Employee shall, for a
                  period of one year from the date this agreement shall
                  terminate, (i) continue to receive his Full Salary (as defined
                  below), which shall be payable in accordance with the payment
                  schedule in effect immediately prior to his employment
                  termination, and (ii) continue to be entitled to participate
                  in all employee benefit plans and arrangements of the Company
                  (such as life, health and disability insurance and automobile
                  arrangements) to the same extent (including coverage of
                  dependents, if any) and upon the same terms as were in effect
                  immediately prior to his termination. For purposes of this
                  Agreement, "Full Salary" shall mean the Employee's annual base
                  salary, plus the amount of any bonus or incentive payments
                  received by the Employee with respect to the last full fiscal
                  year of the Company for which all bonus or incentive payments
                  to be made have been made.

         g)       In the event of a termination of employment pursuant to
                  paragraph 5(a), (c) or (d), the Company shall pay the Employee
                  his full salary through the date of termination of employment.

6.       a)       In the event of a Change in Control of the Company (as defined
                  below), the provisions of this Agreement shall be amended as
                  follows:

                  i)       Paragraph la shall be amended to read in its entirety
                           as follows:

                           "Except as hereinafter otherwise provided, the
                           Company agrees to continue to employ the Employee in
                           a management position with the Company, and the
                           Employee agrees to remain in the employment in the
                           Company in that capacity, for a period of three (3)
                           years from the date of the Change in Control.

                                       5
                              Employment Agreement




   6


                           Except as provided in Paragraph 3d, the Employee's
                           salary as set forth in Paragraph 3a and his other
                           employee benefits pursuant to the plans described in
                           Paragraph 3c shall not be decreased during such
                           period.'


                  ii)      Paragraph 5a shall be amended by the addition of the
                           following provision at the end of such paragraph:

                           "provided that the Employee agrees not to resign,
                           except for Good Reason (as defined below), during the
                           one-year period following the date of the Change in
                           Control."

                  iii)     Paragraph 5b shall be deleted in its entirety.


                  iv)      Paragraph 5f shall be amended to read in its entirety
                           as follows:

                           "Notwithstanding the foregoing provisions, if, within
                           36 months following the occurrence of a Change in
                           Control, the Employee's employment by the Company is
                           terminated (A) by the Company other than for Cause,
                           which shall not include any failure to perform his
                           duties hereunder after giving notice or termination
                           for Good Reason, disability or death or (B) by the
                           Employee for Good Reason, (1) the Company shall pay
                           to the Employee, on the date of his employment
                           termination, a lump sum cash payment in an amount
                           equal to the sum of (x) his unpaid base salary
                           through the date of termination, (y) prorata portion
                           of prior year's bonus and (z) his Full Salary (as
                           defined below) multiplied by three and (2) the
                           Employee shall for 36 months following the occurrence
                           of the Change in Control be eligible to participate
                           in all employee benefit plans and arrangements of the
                           Company (such as life, health and disability
                           insurance and automobile arrangements but excluding
                           incentive arrangements and grants of stock options)
                           to the same extent (including coverage of dependents,
                           if any) and upon the same terms as were in effect
                           immediately prior to his termination. For purposes of
                           this Agreement, "Full Salary" shall mean the
                           Employee's annual base salary, plus the amount of any
                           bonus or incentive payments received by the Employee
                           with respect to the last full fiscal year of the
                           Company for which all bonus or incentive payments to
                           be made have been made. Payments under this Paragraph
                           5f shall be made without regard to whether the
                           deductibility of such payments (or any other
                           "parachute payments," as that term is defined in
                           Section 280G of the Internal Revenue Code of 1986, as
                           amended (the "Code"), to or for the benefit of the
                           Employee) would be limited or precluded by Section
                           280G and without regard to whether such payments (or
                           any other "parachute payments" as so defined in said
                           Section 280G) would subject the Employee to the
                           federal excise tax levied

                                       6
                              Employment Agreement




   7


                           on certain "excess parachute payments" under Section
                           4999 of the Code (the "Excise Tax"). In addition, the
                           Employee shall be entitled to receive a payment (the
                           "Gross-Up Payment") which shall be an amount equal to
                           the sum of (a) the Excise Tax imposed on any
                           parachute payment, whether or not payable under this
                           Agreement, and (b) the amount necessary to pay all
                           additional taxes imposed on (or economically borne
                           by) the Employee (including the Excise Tax, state and
                           federal income taxes and all applicable withholding
                           taxes) attributable to the receipt of the Gross-Up
                           Payment, computed assuming the application of the
                           maximum tax rates provided by law. The determination
                           of the Gross-Up Payment shall be made at the
                           Company's expense by Arthur Andersen & Co. or by such
                           other certified public accounting firm as the Board
                           of Directors of the Company may designate prior to a
                           Change in Control of the Company. In the event of any
                           underpayment or overpayment under this Paragraph 5f
                           as determined by Arthur Andersen & Co. (or such other
                           firm as may have been designated in accordance with
                           the preceding sentence), the amount of such
                           underpayment or overpayment shall forthwith be paid
                           to the Employee or refunded to the Company, as the
                           case may be, with interest at the applicable federal
                           rate provided for in Section 7872(f)(2) of the Code."

                  v)       Paragraph 8 shall be amended to read in its entirety
                           as follows:

                           "The Employee may pursue any lawful remedy he deems
                           necessary or appropriate for enforcing his rights
                           under this Agreement following a Change in Control of
                           the Company, and all costs incurred by the Employee
                           in connection therewith (including without limitation
                           attorneys' fees) shall be promptly reimbursed to him
                           by the Company, regardless of the outcome of such
                           endeavor."

         b)       For purposes of this Agreement, a "Change in Control of the
                  Company" means an event or occurrence set forth in any one or
                  more of clauses (i) through (iv) below (including an event or
                  occurrence that constitutes a Change in Control under one or
                  such clauses but is specifically exempted from another such
                  clause):

                           (i) the acquisition by an individual, entity or group
                  (within the meaning of Section 13(d)(3) or 14(d)(2) of the
                  Securities Exchange Act of 1934, as amended (the "Exchange
                  Act") (a "Person") of beneficial ownership of any capital
                  stock or the Company if, after such acquisition, such Person
                  beneficially owns (within the meaning of Rule 13d-3
                  promulgated under the Exchange Act) 20% or more of either (1)
                  the then-outstanding shares of common stock of the Company
                  (the "Outstanding Company Common Stock") or (2) the combined
                  voting power of

                                       7
                              Employment Agreement




   8


                  the then-outstanding securities of the Company entitled to
                  vote generally in the election of directors (the "Outstanding
                  Company Voting Securities"); provided, however, that for
                  purposes of this paragraph (i), the following acquisitions
                  shall not constitute a Change in Control: (1) any acquisition
                  directly from the Company (excluding an acquisition pursuant
                  to the exercise, conversion or exchange of any security
                  exercisable for, convertible into or exchangeable for common
                  stock or voting securities of the Company, unless the Person
                  exercising, converting or exchanging such security acquired
                  such security directly from the Company or an underwriter or
                  agent of the Company), (2) any acquisition by the Company, (3)
                  any acquisition by any employee benefit plan (or related
                  trust) sponsored or maintained by the Company or any
                  corporation controlled by the Company, or (4) any acquisition
                  by any corporation pursuant to a transaction which complies
                  with subclauses (1) and (2) or clause(iii) of this Section 6b;
                  or

                           (ii) such time as the Continuing Directors (as
                  defined below) do not constitute a majority of the Board (or,
                  if applicable, the Board of Directors of a successor
                  corporation to the Company), where the term "Continuing
                  Director" means at any date a member of the Board (1) who was
                  a member of the Board on the date of the execution of this
                  Agreement or (2) who was nominated or elected subsequent to
                  such date by at least a majority of the directors who were
                  Continuing Directors at the time of such nomination or
                  election or whose election to the Board was recommended or
                  endorsed by at least a majority of the directors who were
                  Continuing Directors at the time of such nomination or
                  election; provided, however, that there shall be excluded from
                  this clause (2) any individual whose initial assumption of
                  office occurred as a result of an actual or threatened
                  election contest with respect to the election or removal of
                  directors or other actual or threatened solicitation of
                  proxies or consents, by or on behalf of a person other than
                  the Board; or

                           (iii) the consummation of a merger, consolidation,
                  reorganization, recapitalization or statutory share exchange
                  involving the Company or a sale or other disposition of all or
                  substantially all of the assets of the Company (a "Business
                  Combination"), unless, immediately following such Business
                  Combination, each of the following two conditions is
                  satisfied: (1) all or substantially all of the individuals and
                  entities who were the beneficial owners of the Outstanding
                  Company Common Stock and Outstanding Company Voting Securities
                  immediately prior to such Business Combination beneficially
                  own, directly or indirectly, more than 50% of the
                  then-outstanding shares of common stock and the combined
                  voting power of the then-outstanding securities entitled to
                  vote generally in the election of directors, respectively, of
                  the resulting or acquiring corporation in such Business
                  Combination (which shall include, without limitation, a
                  corporation

                                       8
                              Employment Agreement




   9


                  which as a result of such transaction owns the Company or
                  substantially all of the Company's assets either directly or
                  through one or more subsidiaries) (such resulting or acquiring
                  corporation is referred to herein as the "Acquiring
                  Corporation") in substantially the same proportions as their
                  ownership, immediately prior to such Business Combination, of
                  the Outstanding Company Stock and Outstanding Company Voting
                  Securities, respectively; and (2) no Person (excluding the
                  Acquiring Corporation or any employee benefit plan (or related
                  trust) maintained or sponsored by the Company or by the
                  Acquiring Corporation) beneficially owns, directly or
                  indirectly, 20% or more of the then outstanding shares of
                  common stock of the Acquiring Corporation, or of the combined
                  voting power of the then-outstanding securities of such
                  corporation entitled to vote generally in the election of
                  directors (except to the extent that such ownership existed
                  prior to the Business Combination); or

                           (iv) approval by the stockholders of the Company or a
                  complete liquidation or dissolution of the Company.

         c)       For purposes of this Agreement, "Good Reason" shall mean the
                  occurrence of any of the following events: (i) a reduction in
                  the Employee's base salary as in effect on the date hereof or
                  as the same may be increased from time to time, except as
                  provided in Paragraph 3d; (ii) a failure by the Company to pay
                  annual cash bonuses to the Employees in an amount at least
                  equal to the most recent annual cash bonuses paid to the
                  Employee; (iii) a failure by the Company to maintain in effect
                  any material compensation or benefit plan in which the
                  Employee participated immediately prior to the Change in
                  Control, unless an equitable arrangement has been made with
                  respect to such plan, or a failure to continue the Employee's
                  participation therein on a basis not materially less favorable
                  than existed immediately prior to the Change in Control; (iv)
                  any significant and substantial diminution in the Employee's
                  position, duties, authorities, responsibilities or title as in
                  effect immediately prior to the Change in Control; (v) any
                  requirement by the Company that the location at which the
                  Employee performs his principal duties be changed to a new
                  location outside a radius of 25 miles from the Employee's
                  principal place of employment immediately prior to the Change
                  in Control;(vi) any requirement by the Company that the
                  Employee travel on an overnight basis to an extent not
                  substantially consistent with the Employee's business travel
                  obligations immediately prior to the Change in Control or
                  (vii) the failure of the Company to obtain the agreement, in a
                  form reasonably satisfactory to the Employee, from any
                  successor to the Company to assume and agree to perform this
                  Agreement. Notwithstanding the foregoing, the resignation
                  shall not be considered to be for Good Reason if any such
                  circumstances are fully corrected prior to the date of
                  resignation. The Employee's right to terminate his employment
                  for Good Reason shall not be affected by his incapacity due to

                                       9
                              Employment Agreement




   10




                  physical or mental illness.

         7.       Neither the Employee nor, in the event of his death, his legal
                  representative, beneficiary or estate, shall have the power to
                  transfer, assign, mortgage or otherwise encumber in advance
                  any of the payments provided for in this Agreement, nor shall
                  any payments nor assets or funds of the Company be subject to
                  seizure for the payment of any debts, judgments, liabilities,
                  bankruptcy or other actions.

         8.       Any controversy relating to this Agreement and not resolved by
                  the Board of Directors and the Employee shall be settled by
                  arbitration in the City of Boston, Commonwealth of
                  Massachusetts, pursuant to the rules then obtaining of the
                  American Arbitration Association, and judgment upon the award
                  may be entered in any court having jurisdiction, and the Board
                  of Directors and Employee agree to be bound by the arbitration
                  decision on any such controversy. Unless otherwise agreed by
                  the parties hereto, arbitration will be by three arbitrators
                  selected from the panel of the American Arbitration
                  Association. The full cost of any such arbitration shall be
                  borne by the Company.

         9.       Failure to insist upon strict compliance with any of the
                  terms, covenants, or conditions hereof shall not be deemed a
                  waiver of such term, covenant, or condition, nor shall any
                  waiver or relinquishment of any right or power hereunder at
                  any one or more times be deemed a waiver or relinquishment of
                  such right or power at any other time or times by either
                  party.

         10.      All notices or other communications hereunder shall be in
                  writing and shall be deemed to have been duly given when
                  delivered personally to the Employee or to the General Counsel
                  of the Company or when mailed by registered or certified mail
                  to the other party (if to the Company, at 45 William Street,
                  Wellesley, Massachusetts 02481, attention General Counsel; if
                  to the Employee, at the last known address of the Employee as
                  set forth in the records of the Company).

         11.      This Agreement has been executed and delivered and shall be
                  construed in accordance with the laws of the Commonwealth of
                  Massachusetts. This Agreement is and shall be binding on the
                  respective legal representatives or successors of the parties,
                  but shall not be assignable except to a successor to the
                  Company by virtue of a merger, consolidation or acquisition of
                  all or substantially all of the assets of the Company. This
                  Agreement constitutes and embodies the entire understanding
                  and agreement of the parties and, except as otherwise provided
                  herein, there are no other agreements or understandings,
                  written or oral, in effect between the parties hereto relating
                  to the employment of the Employee by the Company. All previous
                  employment contracts between the Employee and the Company or
                  any of the Company's present or former subsidiaries or
                  affiliates is hereby canceled and of no effect.

                                       10
                              Employment Agreement




   11


         12.      The Company shall require any successor (whether direct or
                  indirect, by purchase, merger, consolidation or otherwise) to
                  all or substantially all of the business or assets of the
                  Company to assume expressly in writing and to agree to perform
                  its obligations under this Agreement in the same manner and to
                  the same extent that the Company would be required to perform
                  it if no such succession had taken place. Failure of the
                  Company to obtain an assumption of this Agreement prior to the
                  effectiveness of succession shall be a breach of this
                  Agreement. As used in this Agreement, "the Company" shall mean
                  the Company as defined above and any successor to its business
                  or assets as aforesaid which assumes and agrees to perform
                  this Agreement by operation of law, or otherwise.

                                       11
                              Employment Agreement




   12


      IN WITNESS WHEREOF, the Company has caused its seal to be hereunto affixed
and these presents to be signed by its proper officers, and the Employee has
hereunto set his hand and seal the day and year first above written.

(SEAL)                                  EG&G, INC.



                                        By: /s/ Gregory L. Summe
                                            ------------------------------------
                                            Gregory L. Summe
                                            Chairman and Chief Executive Officer


                                        Employee: /s/ Patrik Dahlen
                                                  ------------------------------
                                                  Patrik Dahlen



                                       12
                              Employment Agreement