FEDERAL DATA CORP /FA/
8-K, 1998-03-03
COMPUTERS & PERIPHERAL EQUIPMENT & SOFTWARE
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<PAGE>


                         SECURITIES AND EXCHANGE COMMISSION

                              Washington, D.C. 20549



                                      FORM 8-K

                                   CURRENT REPORT

                       PURSUANT TO SECTION 13 OR 15(d) OF THE

                          SECURITIES EXCHANGE ACT OF 1934



                                 February 17, 1998
                 --------------------------------------------------
                  Date of Report (Date of earliest event reported)



                              FEDERAL DATA CORPORATION
              -------------------------------------------------------
               (Exact name of Registrant as specified in its charter)



                                     DELAWARE
                  ------------------------------------------------
                   (State or other jurisdiction of incorporation)



                                     333-36447
                           -------------------------------
                               (Commission File No.)



                                     52-0940566
                    -------------------------------------------
                      (I.R.S. Employer Identification Number)



                       4800 Hampden Lane, Bethesda, MD  20814
              -------------------------------------------------------
                (Address of principal executive offices) (Zip Code)



                                   (301) 986-0800
              -------------------------------------------------------
                (Registrant's telephone number, including area code)


<PAGE>


Item 5.  Acquisition or Disposition of Assets.

On February 17, 1998, Federal Data Corporation (the "Company"), acquired all of
the outstanding capital stock of R.O.W. Sciences, Inc. ("R.O.W. Sciences") from
Ralph O. Williams ("Williams"), Frederic M. Cullen, Trustees of R.O.W. Sciences
ESOP, John C. Smith and Paul H. Tardif. The total purchase price for the stock
was $9 million, consisting of $8 million in cash and $1 million in promissory
notes to Williams.  The purchase price may be increased by up to $1 million if
certain revenue objectives are met. R.O.W. Sciences provides services that
support Government research in life and health sciences with state-of-the-art
computer based technologies. The Company intends for R.O.W. Sciences to continue
to provide such services.

The Company financed its acquisition of R.O.W. Sciences with funds available
under the $75 million secured revolving credit facility provided to the Company
by Bankers Trust Company, Bank of Boston, The Bank of New York, BTM Capital
Corporation, Creditanstalt Bankverein, Credit Lyonnais New York Branch, First
Source Financial LLP, First Union Commercial Corp. and IBJ Schroder Bank & Trust
Company.


Item 7.   Financial Statements, Pro Forma Financial Information and Exhibits

     (a)  Financial Statements of Business Acquired

     It is not practical to provide the required financial statements for R.O.W.
     Sciences at this time.  The statements will be filed as soon as they are
     prepared and not later than May 4, 1998.

     (b)  Pro Forma Financial Information

     It is not practical to provide the required pro forma financial statements
     for the Company at this time.  The statements will be filed as soon as they
     are prepared and not later than May 4, 1998.

     (c)  Exhibits

2    Stock Purchase Agreement by and among Federal Data Corporation and Ralph O.
     Williams, Frederic M. Cullen, Trustees of R.O.W. Sciences ESOP, John C.
     Smith, Paul H. Tardif and R.O.W. Sciences, Inc. dated as of February 17,
     1998


Signatures


Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

Federal Data Corporation

         /s/  James M.  Dean
By: ----------------------------

James M. Dean
Vice President and 
  Chief Financial Officer

Date: March 3, 1998


<PAGE>


                             STOCK PURCHASE  AGREEMENT

                                    BY AND AMONG

                              Federal Data Corporation

                                        AND

                                 Ralph O. Williams

                                 Frederic M. Cullen

                          Trustees of R.O.W. Sciences ESOP

                                   John C. Smith

                                   Paul H. Tardif

                                        AND

                               R.O.W. Sciences, Inc.

                                 February 17, 1998




<PAGE>


                                      EXHIBITS

Exhibit A:  Form of Note
Exhibit B:  Financial Statements
Exhibit C:  Projections
Exhibit D:  Form of Required Consents; List of Required Consents


                                         -2-


<PAGE>


                              STOCK PURCHASE AGREEMENT


          Agreement entered into as of February 17, 1998, by and among Federal
Data Corporation, a Delaware corporation (the "Buyer"), and Ralph O. Williams
(the "Majority Holder"), Frederic M. Cullen, Trustees of R.O.W. Sciences ESOP,
John C. Smith and Paul H. Tardif (together, the "Minority Holders" and
collectively with the Majority Holder, the "Sellers"), and R.O.W. Sciences,
Inc., a Delaware corporation (the "Target").  The Buyer, the Sellers and Target
are referred to collectively herein as the "Parties." 

          Sellers in the aggregate own all of the outstanding capital stock of
Target.  Target is engaged in a business that consists of biomedical and health
services research; health information management; and computer-based information
technologies provided primarily to agencies of the Government of the United
States pursuant to contracts with such agencies and subcontracts under prime
contracts with such agencies and also to nonprofit agencies and commercial
clients (the "Business").

          This Agreement contemplates a transaction in which, on and subject to
the terms hereinafter set forth,  Buyer will purchase from Sellers, and Sellers
will sell to the Buyer,  all of the outstanding capital stock of Target, all as
more specifically set forth herein.

          Now, therefore, in consideration of the premises and the mutual
promises, representations, warranties, and covenants herein contained, and for
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged and the anticipated benefits of Buyer's ownership of the
Target to Target, the Parties agree as follows.

1.        Definitions.

          "Adverse Consequences" means all actions, suits, proceedings, 
hearings, investigations, charges, complaints, claims, demands, injunctions, 
judgments, orders, decrees, rulings, damages, dues, penalties, fines, costs, 
amounts paid in settlement, liabilities, obligations, taxes, liens, losses, 
expenses, and fees, including court costs and reasonable attorneys' fees and 
expenses.
          "Applicable Rate" means the prime rate of interest published from time
to time in the Wall Street Journal plus 2% per annum.

          "Affiliate" means, as to any Person, any corporation, partnership,
limited liability company or other entity which controls, is controlled by, or
under common control with, such Person, and as to any Person which is a
corporation or limited liability company, any director, managing member, officer
or greater than 10% shareholder of such Person. 

          "Ancillary Agreements" mean the Consulting Agreement executed by Ralph
O. Williams (the "Consulting Agreement"), the Employment Agreement executed by
John C. Smith and the Employment Agreement executed by Paul H. Tardif
(collectively, the "Employment Agreements"), all in form satisfactory to Buyer,
and all in connection with the transactions contemplated by this Agreement.  


<PAGE>


          "Assets" means all of Target's right, title and interest in and to
properties, assets and rights of any kind, whether tangible or intangible, real
or personal, owned by Target, other than the Excluded Assets.  

          "Audited Net Assets" and "Audited Net Asset Statement have the meaning
set forth in section 2(c) below.

          "Business" has the meaning set forth in the Preface.

          "Books and Records" means (a) all records and lists pertaining to
Target, the Assets, the Business, customers, suppliers or personnel of Target,
(b) all product, business and marketing plans of Target and (c) all books,
ledgers, files, reports, plans, drawings and operating records of every kind
maintained by Target and relating to Target, the Business or the Assets, except
for any agreement between or among shareholders which will be terminated as of
the Closing, with no terms surviving thereafter.

          "Buyer"  has the meaning set forth in the preface above.

          "Claim" means any claim for indemnification pursuant to section 9 of
this Agreement.

          "Closing" has the meaning set forth in section 2(f) below.

          "Closing Date" has the meaning set forth in section 2(f) below.

          "Code" means the Internal Revenue Code of 1986, as amended.

          "Confidential Information" means any information concerning the 
Target, Business, or Assets or the businesses and affairs of Buyer, or their 
respective Affiliates that is not already generally available to the public and
is (or would, under the policies of Buyer, be) treated as confidential or 
proprietary by Target.

          "Contract" means any written agreement, contract, lease, purchase 
order, memoranda of understanding or other binding contractual commitment of 
Target, provided, however, that the term Contract shall not, for any purpose 
hereof, include any Excluded Assets.

          "Disclosure Schedule" has the meaning set forth in section 4 below.

          "Employee Benefit Plan" means any (a) nonqualified deferred 
compensation or retirement plan or arrangement which is an Employee Pension 
Benefit Plan, (b) qualified defined contribution retirement plan or arrangement
which is an Employee Pension Benefit Plan, (c) qualified defined benefit 
retirement plan or arrangement which is an Employee Pension Benefit Plan 
(including any Multiemployer Plan), or (d) Employee Welfare Benefit Plan.

          "Employee Pension Benefit Plan" has the meaning set forth in ERISA
Section 3(2).


                                         -2-


<PAGE>


          "ESOP" means the R.O.W. Sciences Employee Stock Ownership Plan,
established as of December 2, 1992, pursuant to the Plan document of such date.
The ESOP, through its trustees, is the owner of 256,245 Target Shares, of which
161,722 remain subject to the lien of Crestar Bank (the "Crestar ESOP Lien")
with respect to the purchase money loan provided with respect to such shares by
Crestar Bank (the "Crestar ESOP Loan").

          "Employee Welfare Benefit Plan" has the meaning set forth in ERISA
Section 3(1).

          "Environmental Laws" means any and all federal, state, local and 
foreign statutes, laws, regulations, ordinances, judgments, orders, codes, or
injunctions, which  impose liability for or standards of conduct concerning the
manufacture, processing, generation, distribution, use, treatment, storage,
disposal, cleanup, transport or handling of Hazardous Substances including, The
Resource Conservation and Recovery Act of 1976, as amended, The Comprehensive
Environmental Response, Compensation and Liability Act of 1980, as amended
("CERCLA"), The Toxic Substances Control Act, as amended, the Occupational
Safety and Health Act of 1970, as amended, to the extent it relates to the
handling of and exposure to hazardous or toxic materials or similar substances,
and any other so-called "Superfund" or "Superlien" law.

          "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended.

          "Excluded Assets" notwithstanding any other provision of this 
greement, shall mean the following assets of Target, if any:

          (a)  any receivables or notes payable from Affiliates of Target or
shareholders of Target, other than for travel advances in the ordinary course;
and

          (b)  all of Target's causes of action, choses in action, rights of
recovery and rights of set-off of any kind against any Person, if any, arising
out of or relating to the Excluded Assets or the Excluded Liabilities.

          "Excluded Liabilities" notwithstanding any other provision of this
Agreement, shall mean the following liabilities and obligations of Target or
relating to the Business or the Assets, which are not intended to be borne by
Target or Buyer by reason of the purchase of the Target Shares pursuant to the
terms of this Agreement:

          (a)  all liabilities and obligations to Affiliates of Target other 
than for the provision of goods or services in the ordinary course of business 
on arm's length terms; 

          (b)  all other liabilities and obligations for which any Seller has
expressly assumed responsibility pursuant to this Agreement or otherwise; 

          (c)  all liabilities and obligations relating to the employment 
agreements between Target and John C. Smith and Target and Paul H. Tardif in 
effect prior to the Closing Date, except as may be otherwise expressly set 
forth herein or in any Ancillary Agreements;

                                         -3-

<PAGE>
          (d)  all obligations for any indebtedness for borrowed money, except 
to the extent the same are reflected on the Audited Net Asset Statement; and

          (e)  all liabilities and obligations resulting or arising as a result 
of or in connection with a finding against or plea by Majority Holder for 
criminal activity or actual, intentional and knowing fraud related to the 
Business.

          "Fiduciary" has the meaning set forth in ERISA Section 3(21).

          "Financial Statements" has the meaning set forth in section 4(g) 
below.

          "Fixtures" means any fixtures, machinery, installations and building
equipment owned by Target and located at or on any Leased Real Property.

          "GAAP" means United States generally accepted accounting principles as
in effect from time to time.

          "Government Contracts" means contracts or subcontracts held by Target
in which the ultimate contracting party is the United States government or any
agency or instrumentality thereof.

          "Hazardous Substance" means any hazardous or toxic substance or waste,
pollutant or contaminant including petroleum products, asbestos, PCBs and
radioactive materials.

          "Income Tax Return" means any return, declaration, report, claim for
refund, or information return or statement relating to Income Taxes, including
any schedule or attachment thereto, and including any amendment thereof.

          "Indemnified Party" has the meaning set forth in section 9(d)(i) 
below.

          "Indemnifying Party" has the meaning set forth in section 9(d)(i) 
below.

          "Intellectual Property" means the following, to the extent related to
the Business (a) all inventions (whether patentable or unpatentable and whether
or not reduced to practice), all improvements thereto, and all patents, patent
applications, and patent disclosures, together with all reissuances,
continuations, continuations-in-part, revisions, extensions, and reexaminations
thereof, (b) all trademarks, service marks, trade dress, logos, trade names, and
corporate names, together with all translations, adaptations, derivations, and
combinations thereof and including all goodwill associated therewith, and all
applications, registrations, and renewals in connection therewith, (c) all
copyrightable works, all copyrights, and all applications, registrations, and
renewals in connection therewith, (d) all mask works and all applications,
registrations, and renewals in connection therewith, (e) all trade secrets and
confidential business information (including ideas, research and development,
know-how, formulas, compositions, manufacturing and production processes and
techniques, technical data, designs, drawings, specifications, customer and
supplier lists, pricing and cost information, and business and marketing plans
and proposals), (f) all computer software (including data and related
documentation), (g) all other 


                                         -4-


<PAGE>


proprietary rights, and (h) all copies and tangible embodiments thereof (in
whatever form or medium).


          "Inventory" means all inventory owned by Target or reflected on the
Audited Net Asset Statement and held for resale in the Business, wherever the
same may be located.

          "January 31 Balance Sheet" means the unaudited balance sheet of the
Target as of January 31, 1998, as initialed by Majority Holder and Buyer as part
of the Closing.

          "Knowledge" means actual knowledge.  Subject to the remaining 
provisions of this definition, as to any corporation,  limited liability 
company or partnership, the knowledge of any executive officer of such 
corporation or the managing member or managing director of such limited 
liability company or any general partner of any such partnership shall 
constitute knowledge of the entity.  Any reference in this Agreement to 
"Knowledge of Majority Holder" or "Knowledge of Target" or other similar 
phrase shall mean the Knowledge of Ralph O. Williams, John C. Smith and Paul 
H. Tardif.  Any reference in this Agreement to "Knowledge of Buyer" or other 
similar phrase shall mean the Knowledge of Daniel R. Young, James M. Dean, 
Peter C. Belford, Timothy Fowler, Larry A. Forseth, and Pamela J. Thompson. 

          "Leasehold Improvements" shall mean all leasehold improvements 
situated in or on the Leased Real Property used in the Business and owned by 
Target. 

          "Loss Contract"  means any Contract for which Target has accrued a 
loss on its financial statements or which Target reasonably expects, based on
Target's Knowledge as of the date of this Agreement and the Closing Date, to
result in a loss.

          "Majority Holder" has the meaning set forth in the preface above.

          "Material Adverse Change" means any change relating to the Business or
the Assets which has a Material Adverse Effect.

          "Material Adverse Effect" means a material adverse affect on the
business, financial condition, operations, results of operations or future
prospects (to the extent reasonably foreseeable as of the date hereof or the
date of Closing) of the Business or the Assets taken as a whole.

          "Minority Holder" has the meaning set forth in the preface above.

          "Most Recent Balance Sheet" means the balance sheet contained within 
the Most Recent Financial Statements.

          "Most Recent Financial Statements" has the meaning set forth in 
section 4(g) below.

          "Most Recent Fiscal Month End" has the meaning set forth in section 
4(g) below.

          "Most Recent Fiscal Year End" has the meaning set forth in section 
4(g) below.


                                         -5-


<PAGE>
          "Multiemployer Plan" has the meaning set forth in ERISA Section 3(37).

          "Party" means Buyer and each Seller.

          "PBGC" means the Pension Benefit Guaranty Corporation.

          "Person" means an individual, a partnership, a corporation, an
association, a joint stock company, a trust, a joint venture, an unincorporated
organization, or a governmental entity (or any department, agency, or political
subdivision thereof).

          "Personal Property" shall mean all of the personal property, whether
tangible or intangible, owned by Target.

          "Pre-Closing Environmental Liabilities" means, in connection with the
Business or the Real Property, any written notice, claim, demand, action, suit,
complaint, proceeding or other communication by any Person or Government
Authority alleging liability or potential liability (including liability for
investigatory costs, cleanup costs, governmental response costs, natural
resource damages, property damage, personal injury, fines or penalties) arising
out of, relating to, based on or resulting from circumstances which, as of the
Closing Date, exist and form the basis of any violation or alleged violation of
any Environmental Laws, including the presence, Release or threatened Release of
any Hazardous Substance.

          "Purchase Price" has the meaning set forth in section 2(b) below.

          "Real Property" means all real property owned, leased, operated or
occupied by the Target as of the date of this Agreement, together with all
Leasehold Improvements or Fixtures located thereon.

          "Reference Amount" means $1,528,015.

          "Release" means any spill, leak, discharge, disposal, pumping, 
pouring, emitting, emptying, injecting, abandoning, leaching, dumping or 
allowing to escape of any Hazardous Substance.

          "Securities Act" means the Securities Act of 1933, as amended.

          "Security Interest" means any mortgage, pledge, lien, encumbrance,
charge, or other security interest, other than (a)(i) mechanic's, materialmen's,
and similar liens, and (ii) other statutory liens, which have been disclosed to
Buyer, with respect to amounts not yet due  and payable or which are being
contested in good faith through appropriate proceedings, (b) liens for taxes not
yet due and payable or for taxes that the taxpayer is contesting in good faith
through appropriate proceedings which have been disclosed to Buyer, for which
adequate reserves are maintained and reflected on the Financial Statements, to
the extent required by GAAP (c) purchase money liens and liens securing rental
payments under capital lease arrangements which are reflected on the  Audited
Net Asset Statement and which do not arise in whole or in part from 


                                         -6-


<PAGE>


indebtedness or capital lease arrangements which constitute Excluded Assets, and
(d) other encumbrances disclosed in the Schedules to this Agreement.

          "Seller Representative" means Ralph O. Williams, or any other Seller
hereafter designated by a majority in interest of the Sellers to act in the
capacity of Seller Representative under this Agreement, which other Seller shall
be identified to Buyer by written notice in accordance with the terms hereof.

          "Subsidiary" means any corporation, partnership, limited liability
company, joint venture or other entity in which Target, directly or indirectly,
holds more than fifty percent (50%) of the voting power of all equity securities
or other ownership interests of such entity, or possesses, directly or
indirectly, power to direct or cause the direction of management or policies
(whether through ownership of voting securities or otherwise).

          "Seller" has the meaning set forth in the preface above.

          "Target" has the meaning set forth in the preface above.

          "Target Share" means any share of the Common Stock, par value $.01 per
share, of Target.

          "Tax" or "Taxes" means any federal, state, local or foreign net or 
gross income, gross receipts, license, payroll, employment, excise, severance, 
stamp, occupation, premium, (including taxes under Code Sec. 59A), customs 
duties, capital stock, franchise, profits, withholding, social security (or 
similar), unemployment, disability, real property, personal property, sales, 
use, transfer, registration, value added, alternative or add-on minimum, 
estimated, or other tax, governmental fee or like assessment or charge of any 
kind whatsoever, together with any interest and penalties, whether as a primary
obligor or as a result of being a "transferee" (within the meaning of Section
6901 of the Code and any corresponding state and local law) of another person or
a member of an affiliated, consolidated or combined group.

          "Third Party Claim" has the meaning set forth in section 9(d) below.

          Other Defined Terms.  The following terms shall have the meanings
defined for such terms in the sections set forth below:  

                      Term                        Section Reference
                      ----                        -----------------
                 Allowable Cost                     Section 9(b)(ii)
                 Business Employees                 Section 5(k)
                 Buyer Indemnification Matter       Section 9(b)
                 Buyer Parties                      Section 9(b)
                 Cash Consideration                 Section 2(b)
                 CERCLA                             Section 1
                 Consulting Agreement               Section 1
                 Crestar ESOP Lien                  Section 1


                                         -7-


<PAGE>


                 Crestar ESOP Loan                  Section 1
                 Determination Date                 Section 2(c)(i)
                 Employment Agreements              Section 1
                 FAR                                Section 9(b)(ii)
                 Interim Payment                    Section 2(b)(i)
                 Leased Real Property               Section 4(m)(ii)
                 Material Contracts                 Section 4(p)(i)
                 Material Lease                     Section 4(m)(ii)
                 Material Intellectual Property     Section 4(o)(i)
                 Material Non-Owned Intellectual 
                     Property                       Section 4(o)(ii)
                 Net Assets                         Section 2(c)(i)
                 Note                               Section 2(b)(i)
                 Objection Notice                   Section 2(c)(i)
                 Parties                            preface
                 Permit                             Section 4(r)
                 Post-Closing Adjustment            Section 2(c)(i)
                 Pre-Closing Default                Section 11(a)
                 Prior Smith Employment Agreement   Section 2(c)
                 Product Warranties                 Section 6(c)
                 Projections                        Section 4(h)
                 Receivables and Unbilled Costs     Section 4(z)(iii)
                 Required Consents                  Section 5(g)
                 Rubino & McGeehin                  Section 2(c)
                 SBA                                Section 3(b)(i)
                 Section 8(a) Contract              Section 2(b)(ii)
                 Seller Indemnification Matters     Section 9(c)
                 Seller Parties                     Section 9(c)
                 Shareholder Agreements             Section 3(b)(iv)
                 Termination Date                   Section 11(a)(iv)


2.        Purchase and Sale of Target Shares.

          (a)  Basic Transaction.  On and subject to the terms and conditions of
this Agreement, the Buyer agrees to purchase from each Seller, and each Seller
agrees to sell to the Buyer, all of such Seller's Target Shares, free and clear
of all restrictions, for the consideration specified below in this section 2. 

          (b)  Total Consideration and Terms.  The aggregate consideration for 
the Target Shares to be purchased by the Buyer hereunder shall consist of the 
sum of Purchase Price, as defined below, plus the Additional Purchase Price, 
as defined below.

               (i)    The "Purchase Price" shall, subject to adjustment as 
          provided in section 2(c) hereof, consist of (x) Eight Million Dollars
          ($8,000,000) in cash (the "Cash


                                         -8-


<PAGE>

Consideration"); and (y) a promissory note in the form attached hereto
as Exhibit A (the "Note"), made by Buyer, in the aggregate principal
amount of One Million Dollars ($1,000,000), which aggregate principal
amount shall be subject to the rights of set-off as provided in
section 9(g) hereof.  

    (ii) The "Additional Purchase Price," which shall be paid to
 Majority Holder, shall be the amount in addition to the Purchase Price
paid to the Sellers by the Buyer, based upon the Target's continuation
of its contracts currently covered by section 8(a) of the Small Business
Act (15 U.S.C. Section  637(a) et. seq.) as so designated in section
4(p) of the Disclosure Schedule to this Agreement.  The Additional
Purchase Price shall equal five percent (5%) of the total revenues
generated by such Section 8(a) Contracts (the "8(a) Contract Revenue")
included in section 4(p) of the Disclosure Schedule during the five (5)
year period commencing January 1, 1998 and actually received by Target
during such period, provided, however, that for purposes of this
subsection and the calculation of the Additional Purchase Price, the
Majority Holder shall also be entitled to receive as the first
installment of the Additional Purchase Price an amount (the "Interim
Payment") equal to five percent (5%) of the difference between
$20,000,000 and $15,792,092, which difference (subject to adjustment in
accordance with the audit to be performed in the calculation of the Net
Asset Adjustment) is agreed by Buyer and Majority Holder to be the
amount of the 8(a) Contract Revenue deemed received by Target during the
period from the date the parties determined the basis for the Purchase
Price and December 31, 1997.  Notwithstanding the foregoing, the
Additional Purchase Price  (including the Interim Payment) shall not
exceed one million dollars ($1,000,000).  The Additional Purchase Price
shall be paid to Majority Holder on a quarterly basis, in arrears, with
the Interim Payment to be made simultaneously with the payment pursuant
to section 2(c) below.  The Additional Purchase Price shall be subject
to reduction pursuant to section 2(c)(iii) below.

    (iii)     At the Closing, the Buyer, directly or pursuant to
mutually agreed upon instructions to a mutually agreed upon escrow
agent, shall pay to the Sellers by wire transfer of immediately
available funds to an account or accounts designated in writing by the
Sellers an amount equal to the Cash Consideration and issue and deliver
to the Majority Holder the Note.  The Purchase Price shall be paid to or
directed in writing by each of the Sellers as follows: 
                     
         (A)  a portion of the Cash Consideration shall be paid to each
Minority Holder, in each case equal to such Minority Holder's respective
percentage holding of Target Shares multiplied by $10,000,000;

         (B)  remainder of the Cash Consideration shall be paid to
Majority Holder; and

         (C)  the Note shall be fully payable to, and delivered at
Closing to, the Majority Holder.

                                         -9-
<PAGE>

    (c)  Net Asset Adjustment.  Not later than ninety (90) days after the
Closing Date, the Majority Holder shall cause to be prepared and delivered to
Buyer an audited special purpose statement of the Net Assets (as defined below)
as of January 31, 1998 (the "Audited Net Asset Statement") which shall have been
audited by Rubino & McGeehin Chartered ("Rubino & McGeehin") in accordance with
GAAP, applied on a basis consistent with, and following the accounting
principles, procedures, policies and methods employed by Target in preparing
Target's Most Recent Fiscal Year End balance sheet (to the extent consistent
with GAAP); provided, however, that appropriate adjustments shall be made to
include as liabilities of Target accrued as of January 31, 1998 for purposes of
the Audited Net Asset Statement the following items:  the amount ($100,000) paid
to settle the Carey litigation against Target (docket No. 158313, Maryland
Circuit Court); the excise tax of approximately $296,200 payable by Target in
connection with the sale of the Target Shares owned by the ESOP; the legal fees
and financial advisory fees paid by the Target in connection with consideration
of this Agreement by the Trustees of the ESOP and the sale by the ESOP of its
Target Shares; legal fees for services to Target, Sellers and their Affiliates
in connection with the transaction contemplated by this Agreement; the bonus
payable to John C. Smith upon sale of Target in accordance with section 4 of the
employment agreement in effect between John C. Smith and Target prior to the
Closing Date (the "Prior Smith Employment Agreement") and one-half of the fees
and expenses charged by Rubino & McGeehin for preparing such Audited Net Asset
Statement.  Buyer and Sellers shall promptly provide the other Party hereto
access to, and copies of, all information reasonably requested by the other
Party or its representatives in connection with the preparation of the Audited
Net Asset Statement or to investigate the basis of any dispute therewith.

         (i)  Buyer shall have a period of thirty (30) days after delivery
    to it of the Audited Net Asset Statement to provide to the Seller
    Representative notice setting forth with reasonable specificity any
    objection thereto, which objection shall relate only to any matters
    which affect the amount of Net Assets shown on the Audited Net Asset
    Statement (an "Objection Notice").  Failure to provide an Objection
    Notice within such thirty-day period shall constitute Buyer's approval
    of the Audited Net Asset Statement as so delivered.  If Buyer timely
    provides an Objection Notice, Buyer and the Seller Representative shall
    promptly commence good faith discussions in an attempt to resolve any
    issues raised in the Objection Notice.  If Buyer and the Seller
    representative are unable to resolve such dispute within thirty (30)
    days after the delivery of the Objection Notice, such dispute shall be
    resolved by a national accounting firm mutually acceptable to the Buyer
    and the Majority Holder or, in the absence of agreement, by a national
    accounting firm selected by lot after eliminating Target's and Buyer's
    principal outside accountants.  At or prior to the time such dispute is
    submitted to such accounting firm for resolution, Buyer shall provide a
    specific proposed Net Asset amount. The accounting firm so selected
    shall make its determination within thirty (30) days after delivery to
    it of the Objection Notice which determination shall be final and
    binding upon the Parties with respect to the Post-Closing Adjustment. 
    The fees and expenses of such accounting firm shall be paid by the Buyer
    and the Sellers pro rata in accordance with each Party's asserted
    position relative to the accounting firm's final determination.  The
    amount of the Net Assets on the Closing Net Assets Statement, as
    determined pursuant to this section, 


                                    10
<PAGE>

    shall be the "Audited Net Assets."  For purposes of this Agreement, "Net 
    Assets" means the book value of total Assets owned by Target as of the 
    Closing,  less the book value of Target's liabilities as of the Closing, 
    other than all Excluded Liabilities, each as determined in accordance 
    with GAAP, applied on a basis consistent with, and following the 
    accounting principles, procedures, policies and methods employed by 
    Sellers in preparing Target's Most Recent Fiscal Year End balance sheet. 
    The date on which the Audited Net Assets is determined shall be the 
    "Determination Date."  The "Post-Closing Adjustment" shall be computed 
    by subtracting the Reference Amount from the Audited Net Assets.
 
         (ii) If the Post-Closing Adjustment is a positive number, Buyer 
    shall pay such excess to Majority Holder, in immediately available 
    funds, within ten (10) business days after the Determination Date.  

         (iii) If the Post Closing Adjustment is a negative number, the 
    first installment of the Additional Purchase Price and, to the extent 
    necessary, any subsequent installments, paid to the Majority Holder, and 
    then the principal amount of  the Note, shall be reduced by such 
    deficiency, until the entire amount of such deficiency shall have been 
    recovered by Buyer, provided that the aggregate of the Additional 
    Purchase Price and the principal amount of the Note shall be the maximum 
    amount to be recovered by Buyer pursuant to this section 2(c)(iii). a(d) 
    The Closing.  The closing of the transactions contemplated by this 
    Agreement (the "Closing") shall take place at the offices of Shaw 
    Pittman Potts & Trowbridge in Washington, D.C., commencing at 11:00 a.m. 
    local time on February 17, 1998 or on the second business day following 
    the satisfaction or waiver of all conditions to the obligations of the 
    Parties to consummate the transactions contemplated hereby (other than 
    conditions with respect to actions the respective Parties will take at 
    the Closing itself) or such other date as the Buyer and the Sellers may 
    mutually determine (the "Closing Date").

         (e)  Deliveries at the Closing.  At the Closing, (i) the Sellers will
deliver to the Buyer the various certificates, instruments, and documents
referred to in section 7(a) below, (ii) the Buyer will deliver to the Sellers
the various certificates, instruments, and documents referred to in section 7(b)
below, (iii) each of the Sellers will deliver to the Buyer stock certificates
representing all of such Seller's Target Shares, endorsed in blank or
accompanied by duly executed assignment documents and any necessary releases to
make such Target Shares free and clear of any liens, and (iv) the Buyer will
deliver to each Seller the portions of the consideration specified in section
2(b)(i) and (iii) above.

    3. Representations and Warranties of the Buyer and Sellers.  

         (a)  Representations and Warranties Concerning the Buyer.  The Buyer
represents and warrants to the Sellers that the statements contained in this
section 3(a) are correct and complete as of the date of this Agreement and will
be correct and complete as of the Closing Date (as 


                                         -11-
<PAGE>

though made then and as though the Closing Date were substituted for the date of
this Agreement throughout this section 3(a)).

         (i)  Organization of the Buyer.  The Buyer is a corporation duly 
    organized, validly existing, and in good standing under the laws of 
    Delaware.

         (ii) Authorization of Transaction.  The Buyer has full power and
    authority (including full corporate power and authority) to execute and
    deliver this Agreement and to perform its obligations hereunder.  This
    Agreement constitutes the valid and legally binding obligation of the
    Buyer, enforceable in accordance with its terms and conditions, except
    as the enforceability hereof may be affected by bankruptcy, insolvency,
    fraudulent transfer, reorganization and similar laws affecting the
    rights of creditors generally, and by general principles of equity.  The
    Buyer need not give any notice to, make any filing with, or obtain any
    authorization, consent, or approval of any government or governmental
    agency in order to consummate the transactions contemplated by this
    Agreement, except for the filing, if any, contemplated by section 5(b)
    below.

         (iii) Noncontravention.  Neither the execution and the delivery
    of this Agreement, nor the consummation of the transactions contemplated
    hereby, will violate any constitution, statute, regulation, rule,
    injunction, judgment, order, decree, ruling, charge, or other
    restriction of any government, governmental agency, or court to which
    the Buyer is subject or any provision of its Certificate of
    Incorporation or Bylaws.

         (iv) Brokers' Fees.  The Buyer has no liability or obligation to
    pay any fees or commissions to any broker, finder, or agent with respect
    to the transactions contemplated by this Agreement for which any Seller
    could become liable or obligated.

    (b)  Representations and Warranties Concerning the Sellers.  Each of the
Sellers represents and warrants to the Buyer that the statements contained in
this section 3(b) are correct and complete as of the date of this Agreement and
will be correct and complete as of the Closing Date (as though made then and as
though the Closing Date were substituted for the date of this Agreement
throughout this section 3(b)) with respect to itself or himself, except as set
forth in the Disclosure Schedule attached hereto.

         (i)  Authorization of Transaction.  Each Seller has full power and
    authority to execute and deliver this Agreement and to perform his
    obligations hereunder.  This Agreement constitutes the valid and legally
    binding obligation of each Seller, enforceable against such Seller in
    accordance with its terms and conditions, except as the enforceability
    hereof may be affected by bankruptcy, insolvency, fraudulent transfer,
    reorganization, and similar laws affecting the rights of creditors
    generally, and by general principles of equity.  Except as expressly set
    forth herein, no Seller is required to give any notice to, make any
    filing with, or obtain any authorization, consent, or approval of any
    government or governmental agency or any other Person in order to
    consummate the transactions contemplated by this Agreement, except for
    the filing of a notice with the 

                                         -12-

<PAGE>

    small Business Administration (the "SBA") with respect to the transfer
    of control of a company qualified under section 8(a) of the Small
    Business Act.

         (ii) Noncontravention.  Neither the execution and the delivery of
    this Agreement, nor the consummation of the transactions contemplated
    hereby, will violate any constitution, statute, regulation, rule,
    injunction, judgment, order, decree, ruling, charge, or other
    restriction of any government, governmental agency, or court to which
    any Seller is subject.  The Parties recognize and exclude from the
    foregoing the fact that a certain proportion of the contracts currently
    held by Target (as shown on sections 4(p) or 4(ab) of the Disclosure
    Schedule) have been awarded under SBA programs which are subject to
    certain restrictions.

         (iii) Brokers' Fees.  No Seller has any liability or obligation
    to pay any fees or commissions to any broker, finder, or agent with
    respect to the transactions contemplated by this Agreement for which the
    Buyer could become liable or obligated.

         (iv) Target Shares.  Each Seller holds of record and owns
    beneficially (except for the Trustees of the ESOP who hold of record and
    for the benefit of the ESOP participants the ESOP Target Shares) the
    number of Target Shares set forth next to his name in section 3(b) of
    the Disclosure Schedule, free and clear of any restrictions on transfer
    (other than any restrictions under the Securities Act and state
    securities laws), taxes, Security Interests, options, warrants, purchase
    rights, contracts, commitments, equities, claims, and demands other than
    (A) such restrictions as may be contained in the agreements (the
    "Shareholder Agreements") described in section 3(b) of the Disclosure
    Schedule, each of which will be terminated and of no further force or
    effect as of the Closing and (B) the Crestar ESOP Lien.  No Seller is a
    party to any option, warrant, purchase right, or other contract or
    commitment (other than the Shareholder Agreements and this Agreement)
    that could require such Seller to sell, transfer, or otherwise dispose
    of any capital stock of Target.  No Seller is a party to any voting
    trust, proxy, or other agreement or understanding with respect to the
    voting of any capital stock of Target.

    4. Representations and Warranties Concerning Target.  Each of Target and
the Majority Holder jointly and severally represent and warrant to the Buyer
that the statements contained in this section 4 are correct and complete as of
the date of this Agreement and will be correct and complete as of the Closing
Date (as though made then and as though the Closing Date were substituted for
the date of this Agreement throughout this section 4), except as set forth in
the disclosure schedule delivered by the Sellers to the Buyer on the date hereof
and initialed by the Parties (the "Disclosure Schedule"). The Disclosure
Schedule will be arranged in paragraphs corresponding to the lettered and
numbered paragraphs contained in this section 4.

    (a)  Corporate Existence and Capitalization.  

         (i)  Target is a corporation duly organized, validly existing, and
    in good standing under the laws of the State of Delaware.  Target is
    duly authorized to conduct business as a foreign corporation and is in
    good standing under the laws of each 


                                         -13-
<PAGE>

    jurisdiction where such qualification is required, except where the lack
    of such qualification would not have a Material Adverse Effect.  Section
    4(a) of the Disclosure Schedule contains an accurate list of all
    jurisdictions in which Target is qualified to do business as a foreign
    corporation

         (ii) The authorized capital stock of Target consists solely of
    1,000,000 shares of common stock, par value  $.01 per share, of which
    693,478 shares are issued and outstanding.  All of the issued and
    outstanding shares of such common stock have been duly authorized and
    validly issued and are fully paid and nonassessable and are not subject
    to any preemptive rights.  To the knowledge of Target, each of the
    Sellers owns of record and beneficially the number of shares of common
    stock set forth on section 3(b) of the Disclosure Schedule with respect
    to such Seller, free and clear of all restrictions on transfer (other
    than restrictions under the Securities Act, state securities laws and
    the Shareholder Agreements, which Shareholder Agreements shall be
    terminated on or before the Closing), taxes, Security Interests,
    options, warrants, purchase rights, contracts, commitments, equities,
    claims and demands, other than such restrictions as may be contained in
    the Shareholder Agreements.
    
         (iii) Target has not issued or granted any outstanding options,
    warrants, rights or other securities convertible into or exchangeable or
    exercisable for shares of the capital stock of Target, any other
    commitments or agreements providing for the issuance of additional
    shares of the capital stock of Target, the sale of treasury shares, or
    for the repurchase or redemption of shares of Target's capital stock, or
    any obligations arising from canceled stock.  There are no agreements of
    any kind which may obligate Target to issue, purchase, register for
    sale, redeem or otherwise acquire any of its securities or interests. 
    There are no outstanding or authorized stock appreciation, phantom stock
    or similar rights with respect to Target.
    
         (iv) To the Knowledge of Target, except for the Shareholder
    Agreements and the Crestar ESOP Lien, there are no voting trusts,
    shareholder agreements, proxies or other agreements in effect with
    respect to the voting or transfer of the Target Shares.
    
    (b)  Authorization of Transaction.  Target has all requisite corporate
power and authority to own, lease and operate the properties owned by it, to
conduct its business as it is presently being conducted, to execute and deliver
this Agreement and to perform its obligations hereunder.  This Agreement has
been duly executed and delivered by Target.
    
    (c)  Noncontravention.  Except as set forth in section 4(c) of the
Disclosure Schedule, neither the execution and the delivery of this Agreement,
nor the consummation of the transactions contemplated hereby, will (i) violate
any constitution, statute, regulation, rule, injunction, judgment, order,
decree, ruling, charge, or other restriction of any government, governmental
agency, or court to which Target or any of the Assets is subject or any
provision of the charter or bylaws of Target or (ii) conflict with, result in a
material breach of, constitute a default under, result in the acceleration of,
create in any party the right to accelerate, terminate, modify, or cancel, or
require any notice under any Contract to which Target is a party or by 
   
                                      -14-
<PAGE>

which it is bound or to which any of the Assets is subject (or result in the
imposition of any Security Interest upon any of the Assets), except where, prior
to or simultaneously with the Closing, such Contract is being terminated or the
consent of the other party thereto will have been obtained.  Target does not
need to give any notice to, make any filing with, or obtain any authorization,
consent, or approval of any government or governmental agency in order for the
Parties to consummate the transactions contemplated by this Agreement, except
where the failure to give notice, to file, or to obtain any authorization,
consent, or approval would not have a Material Adverse Effect on the business,
financial condition, operations, results of operations, or future prospects of
the Business, or on the ability of the Parties to consummate the transactions
contemplated by this Agreement, and except for the filing contemplated by
section 5(b) below.  Notwithstanding the foregoing, Target and the Majority
Holder make no representation as to the applicability of 41 U.S.C. section 15
(the "Assignment of Claims Act"), 31 U.S.C. section 3727 (the "Assignment of
Claims Act"), or the assignability of any contracts subject to any restrictions
under Small Business Administration programs.

    (d)  Title to Assets.  Except as set forth in section 4(d) of the
Disclosure Schedule, Target has good title to, or a valid leasehold interest in,
or, as to Intellectual Property, valid license of, the property and assets used
by it, or shown on the Most Recent Balance Sheet or acquired after the date
thereof and shown on the Audited Net Asset Statement, free and clear of any
Security Interests.   Except as contemplated by this Agreement, the Assets are
all of the assets necessary for the conduct of the Business as currently
conducted.  
    
    (e)  Books and Records.  Target has made and kept (and given Buyer
access to) Books and Records and accounts, which, in reasonable detail,
accurately and fairly reflect in all material respects, Target's business.  The
minute books of Target to which Buyer has been given access do not omit
reference to any corporate transaction that requires board or shareholder
approval of Target which will continue in effect or remain binding on Target or
any of the Assets after the Closing.
    
    (f)  Subsidiaries.  Target has no Subsidiaries.
    
    (g)  Financial Statements.  Attached hereto as Exhibit B are the
following financial statements (collectively the "Financial Statements"): (i)
audited balance sheets and audited statements of income, changes in
stockholders' equity, and cash flow as of and for the fiscal years ended June
30, 1997 (the "Most Recent Fiscal Year End"), June 30, 1996 and June 30, 1995
for Target,  and (iii) unaudited balance sheets and statements of operations, 
(the "Most Recent Financial Statements") as of and for the six (6) months ended
December 31, 1997 (the "Most Recent Fiscal Month End") for Target. The 
Financial Statements described above present fairly the financial condition of
Target and the Business as of such dates and the results of operations of Target
for such periods.   The Financial Statements (including the notes thereto ) have
been prepared in accordance with GAAP applied on a consistent basis throughout
the periods covered thereby;  provided, however, that the Most Recent Financial
Statements are subject to normal year-end adjustments (which will not be
material individually or in the aggregate) and lack footnotes and other
presentation items.  
    
                                     -15-
<PAGE>

    (h)  Projections.  Majority Holder has delivered to Buyer projected
income statements and balance sheets of the Business for the 1998 and 1999
fiscal years (the "Projections"), which are attached as Exhibit C hereto.  The
Projections were prepared in good faith and represent management's current
estimate, based on Target's current Knowledge, of the financial position and
results of operations of the Business for the periods indicated. To Target's
Knowledge as of the date hereof and as of the Closing Date,  the assumptions
forming the basis of such Projections are reasonable.  Buyer recognizes that the
basis for such Projections assumes the "stand alone" operation of the Business.
    
    (i)  Events Subsequent to Most Recent Fiscal Year End.  Since the Most
Recent Fiscal Year End, there has not been any Material Adverse Change in
Target, or the Business, taken as a whole.  Specifically, without limiting the
generality of the foregoing, since the Most Recent Fiscal Year End, except as
contemplated in this Agreement or as set forth in the Disclosure Schedule, there
has not been any:
    
         (i)  change in accounting methods, principles, or practices by
    Target, except as required by law or by generally applicable changes
    instituted in the accounting profession;
    
         (ii) material damage, destruction or loss (whether or not covered
    by insurance) adversely affecting the tangible Assets or the Business;
    
         (iii) cancellation of any material indebtedness or waiver or
    release of any material right or claim of Target;
    
         (iv) increase in the rate of compensation payable or to become
    payable to, any bonus, incentive compensation, service award or other
    like benefit granted, made or accrued, contingently or otherwise, for or
    to the credit of, any director, officer or other employee, except as
    provided in any employment agreement (including any union contract)
    between Target and any such persons or in any employee plan, and except
    for any increases in the normal course of business; 
    
         (v) addition to or modification of the Employee Benefit Plans,
    arrangements or practices affecting the officers, directors, or Business
    Employees of Target other than (A) contributions made for 1997 in
    accordance with the normal practices of the Target, or (B) the extension
    of coverage to such persons who became eligible after the Most Recent
    Fiscal Year End;
    
         (vi) cancellation or termination of any material Contract or entry
    into any Contract which is not in the ordinary course of the business of
    Target;
    
         (vii) sale, assignment or transfer of any material portion of
    the Assets, other than in the ordinary course of business, except as
    approved in writing in advance by Buyer and except for transfers of the
    Excluded Assets;
    
                                     -16-

<PAGE>

         (viii) capital expenditure or the execution of any lease or any
    incurring of liability therefor by Target involving payments in excess
    of $100,000 with respect to any such expenditure or lease or otherwise
    not substantially in accordance with Target's past practice;
    
         (ix) any indebtedness incurred by Target for borrowed money or any
    commitment to borrow money entered into by Target, or any loans made or
    agreed to be made by Target except for loans constituting Excluded
    Assets and indebtedness incurred in the ordinary course of business as
    part of Target's Inventory financing or under the existing working
    capital line of credit;
     
         (x)  revaluation by Target of any of the Assets, including, without
    limitation, writing-off notes, or writing-off accounts receivable except
    with respect to accounts receivable written off in the ordinary course
    of business;
    
         (xi) payment or declaration of any dividends, distributions with
    respect to any of the Target Shares, or redemption, repurchase or
    acquisition by Target of any of the Target Shares; or
         
         (xii) agreement by Target or the Majority Holder to do any of
    the things described in the preceding clauses (i) through (xi), other
    than as expressly provided herein.
    
    (j)  Undisclosed Liabilities.  Target does not have any material
liability (whether absolute or contingent, whether accrued or unaccrued, whether
liquidated or unliquidated, and whether due or to become due, including any
liability for Taxes), except for (i) liabilities set forth on the Most Recent
Financial Statements (or in any notes to the June 30, 1997 Financial Statements)
and liabilities on the Audited Net Asset Statement, including, but not limited
to, the liability to be reflected on the Audited Net Asset Statement for the
excise tax of approximately $296,200 resulting from the sale of Target Shares by
the ESOP, (ii) liabilities which have arisen after the Most Recent Fiscal Month
End in the ordinary course of business, and (iii) Excluded Liabilities. 
    
    (k)  Legal Compliance.  Target has complied in its operations in all
material respects with all applicable  statutes and governmental rules,
regulations and Permits. No action, suit, proceeding, hearing, or, to Majority
Holder's Knowledge, investigation, charge, complaint, claim, demand, or notice
has been filed or commenced against Target alleging any failure so to comply,
nor, to the Knowledge of Majority Holder, are any such actions threatened.
    
    (l)  Tax Matters.
    
         (i)  Filing of Tax Returns.  Target has timely filed with the
    appropriate taxing authorities all returns (including without limitation
    information returns and other material information) in respect of Taxes
    required to be filed through the date hereof and will timely file any
    such returns required to be filed on or prior to the Closing Date, in
    each 
    
                                     -17-
<PAGE>

    case, subject to any applicable extensions.  The returns and other
    information filed are complete and accurate in all material respects. 
    Target has not requested any extension of time within which to file
    returns (including without limitation information returns) in respect of
    any Taxes. 
    
         (ii) Payment of Taxes.  All Taxes that accrue or are payable by
    Target in respect of taxable periods that end on or before the Closing
    Date and for any taxable periods that begin before the Closing Date and
    end thereafter to the extent such Taxes are attributable to the portion
    of such period ending on the Closing Date (such period being referred to
    herein as a "Pre-Closing Partial Period"), as determined under the
    closing of the books method of allocation, have (or will have, on or
    before the Closing Date) been timely paid, or an adequate reserve has
    been established therefor (or will be on or before the Closing Date), as
    set forth in section 4(l) of the Disclosure Schedule or in the Financial
    Statements.  Target has no liability for Taxes in excess of the amounts
    so paid or reserves so established.  
    
         (iii) Audit, Investigations or Claims.  Except as set forth in
    section 4(l) of the Disclosure Schedule, there are no pending or to the
    best of the Target's knowledge, threatened audits, investigations or
    claims for or relating to any additional Tax liability, and there are no
    matters under discussion with any governmental authorities with respect
    to Taxes that in the reasonable judgment of the Target is likely to
    result in a material additional liability of Target for Taxes.   Except
    as set forth in such section 4(l), neither Target nor Majority Holder
    has been notified that any taxing authority intends to audit any return
    of Target for any period.
    
         (iv) Lien.  There are no liens for Taxes (other than for current
    Taxes not yet due and payable) on the Assets.
    
         (v)  Safe Harbor Lease Property.  None of the Assets is property
    that is required to be treated as being owned by any other person
    pursuant to the so-called safe harbor lease provisions of former Section
    168(f)(8) of the Code.
    
         (vi) Security for Tax-Exempt Obligations.  None of the Assets
    directly or indirectly secures any debt the interest on which is
    tax-exempt under Section 103(a) of the Code.
    
         (vii) Tax Exempt Use Property.  None of the Assets is "tax
    exempt use property" within the meaning of Section 168(h) of the Code.
    
         (viii) Foreign Person.  Neither Target nor any Seller is a
    person other than a United States person within the meaning of the Code.
    
         (ix) Wage Withholding.  Target has withheld all Taxes required to
    have been withheld in connection with amounts paid or owing to any
    employee, independent contractor, creditor, stockholder, or other third
    party, and such withheld Taxes have either 

                                         -18-
<PAGE>

    been duly paid to the proper governmental authority or properly set
    aside in accounts for such purpose.
   
         (x)  Disclosure Statements.  Target has not filed with respect to
    any item a disclosure statement pursuant to Code Section 6662 or any
    comparable disclosure with respect to foreign, state and/or local
    statutes.
    
         (xi) Liability For Taxes of Others.  Target (A) has not been a
    member of any affiliated group filing a consolidated federal Income Tax
    Return and (B) has no liability for the Taxes of any person as defined
    in Section 7701(a)(1) of the Code under Treas. Reg. Section  1.1502-6
    (or any similar provision of state, local, or foreign law), as a
    transferee or successor, by contract, or otherwise.
    
         (xii) No Withholding.  The transaction contemplated herein is
    not subject to the tax withholding provisions of Section 3406 of the
    Code, or of Subchapter A of Chapter 3 of the Code or of any other
    provision of law.
    
         (xiii) Parachute Payments.  Target has not made any payments,
    nor is Target obligated to make any payments, and is not a party to any
    agreement that could obligate it to make any payments that will not be
    deductible under Section 280G of the Code.
    
         (xiv) Changes in Accounting Method.  Except as set forth in
    section 4(l) of the Disclosure Schedule, Target has not agreed to nor is
    it required to make any adjustment pursuant to Section 481(a) of the
    Code by reason of a change in accounting method initiated by Target, and
    neither Target nor any Majority Holder has any knowledge that the IRS
    has proposed any such adjustment or change in accounting method.
    
    (m)  Real Property.  
    
         (i)  Target does not own any real property.
         
         (ii) Section 4(m)(ii) of the Disclosure Schedule lists and
    describes briefly all real property leased or subleased to Target for
    use in the Business (the "Leased Real Property").  Target has made
    available to the Buyer correct and complete copies of the leases and
    subleases listed in section 4(m)(ii) of the Disclosure Schedule (as
    amended to date).  With respect to each lease and sublease listed in
    section 4(m)(ii) of the Disclosure Schedule which relates to the leases
    (A) with Allstate Insurance Co. for the Target's Maryland headquarters,
    and (B) with Rickman Firstfield Associates for Target's Maryland
    laboratory facility (each, a "Material Lease"), the lease or sublease is
    legal, valid, binding, enforceable, and in full force and effect. 
    Target has not assigned, transferred, conveyed, mortgaged, deeded in
    trust, or encumbered any interest in any such leasehold or subleasehold. 
    Target enjoys peaceful and undisturbed possession of all Leased Real
    Property, and Target has fulfilled in all material respects all the
    obligations required to be performed by it through the date hereof with
    respect to such Material Leases.  Each 

                                         -19-

<PAGE>

    Material Lease is transferable (upon receipt of necessary landlord
    consents) in connection with the transactions contemplated hereby.
         
         (iii) Target has received all required material approvals of
    governmental authorities (including Permits and material certificates of
    occupancy or other similar certificates permitting lawful occupancy)
    required in connection with the present use of the space covered by the
    Material Leases.
    
         (iv) Target has not received notice of any special assessment
    relating to any Real Property for which Target would be liable under any
    of the Real Property Leases.
       
    (n)  Tangible Personal Property.  All items of tangible Personal
Property having a gross book value equal to or greater than $10,000 constituting
part of the Assets are in good operating condition and repair (subject to normal
wear and tear) and are suitable for the purposes for which they are intended
(taking into account the constantly evolving nature of computer and other
technological equipment).
    
    (o)  Intellectual Property.  To the Knowledge of Majority Holder, Target
has not interfered with, infringed upon, misappropriated, or violated any
Intellectual Property rights of third parties in any material respect, and
Target has not received, within the last two years any written charge,
complaint, claim, demand, or notice alleging any such interference,
infringement, misappropriation, or violation. To the Knowledge of Target, no
third party has interfered with, infringed upon, misappropriated, or violated
any material Intellectual Property rights of Target constituting part of the
Assets.  
       
         (i)  Section 4(o)(i) of the Disclosure Schedule identifies those
    items of Intellectual Property owned by Target and used in the Business,
    the loss of which could reasonably be expected to have a Material
    Adverse Effect ("Material Intellectual Property"), and identifies each
    license, agreement, or other permission which Target has granted to any
    third party with respect to any such Material Intellectual Property
    (together with any exceptions). Copies of all documents of Material
    Intellectual Property  have been made available to Buyer.  With respect
    to each item of Intellectual Property required to be identified in
    section 4(o)(i) of the Disclosure Schedule:
    
         (A)  the item is not subject to any adverse outstanding
    injunction, judgment, order, decree, ruling, or charge; and
    
         (B)  no action, suit, proceeding, hearing, investigation,
    charge, complaint, claim, or demand is pending or, to the Knowledge of
    Target, threatened which challenges the legality, validity,
    enforceability, use, or ownership of the item.
    
         (ii) Pursuant to a valid license, sublicense, agreement, or
    permission, Target holds all of the Intellectual Property owned by any
    third party and required to operate the Business ("Material Non-Owned 
    Intellectual Property"), the loss or unavailability of which would have a 
    material adverse effect on the Business. Copies of all documents of

                                      20
<PAGE>

                 Material Non-Owned Intellectual Property have been made 
                 available to Buyer.  With respect to each item of Intellectual
                 Property described in this section 4(o)(ii): 

                           (A)  the license, sublicense, agreement, or 
                 permission covering the item is legal, valid, binding, 
                 enforceable, and in full force and effect; provided, 
                 however, that no representation is made as to the ownership 
                 of any Material Non-Owned Intellectual Property or as to the 
                 right of the Target's licensor, sublicensor or grantor to 
                 grant any such license, sublicense, agreement or permission;

                           (B)  neither Target nor, to the Knowledge of 
                 Target, any other party to the license, sublicense, 
                 agreement, or permission is in breach or default which would 
                 permit termination, modification, or acceleration 
                 thereunder; and

                           (C)  Target has not granted any sublicense or 
                 similar right with respect to the license, sublicense, 
                 agreement, or permission.

                      (iii)     With respect to each software license or 
                 software sublicense to which Seller is a party, Seller has 
                 not granted any sublicense or similar right except in 
                 accordance with the terms and conditions thereof, including 
                 the payment of all applicable royalties, and is not 
                 otherwise in material violation of such license or 
                 sublicense agreement.

                 (p)  Contracts. 

                      (i)  Buyer has been given access to copies of the 
                 currently effective Contracts  described in clauses (A) 
                 through (P)  to which Target is a party (the "Material 
                 Contracts"), which copies are true and correct in all 
                 material respects, subject to ordinary course extensions, 
                 renewals, and similar changes.  Section 4(p) of the 
                 Disclosure Schedule lists:

                           (A)  except as summarized in the Financial 
                 Statements or included in section 4(i)(viii) to the 
                 Disclosure Schedule, each lease, rental or occupancy 
                 agreement, license, installment and conditional sale 
                 agreement, and other Contract affecting the ownership of, 
                 leasing of, title to, use of, or any leasehold or other 
                 interest in, any real or personal property, providing for 
                 payments in excess of $25,000 per annum;

                           (B)  any Contract (or group of related Contracts) 
                 (other than a Government Contract) for the furnishing or 
                 receipt of goods or services or delivery of goods and/or 
                 materials, the performance of which will extend over a 
                 period of more than one year after the date of this 
                 Agreement or under which Target is obligated to pay or 
                 expected to receive aggregate consideration in excess of 
                 $50,000 or is required to incur capital expenditures in 
                 excess of $50,000 during the year ending December 31, 1998; 

                           (C)  any Government Contract, including any 
                 Section 8(a) Contract of the Small Business Act (15 U.S.C. 
                 Section 637(a) et seq.), to which Target is a party as of 


                                         21


<PAGE>

                 January 31, 1998, each of which is denoted as a Section 8(a) 
                 Contract on the Disclosure Schedule;

                           (D)  any Contract creating or governing a 
                 partnership, limited liability company, joint venture or any 
                 teaming agreement or other Contract (however named) which 
                 teaming agreement or other Contract involves a sharing of 
                 profits, losses, costs, or liabilities by Target with any 
                 other Person and involving a liability of Target in excess 
                 of $10,000 per annum;

                           (E)  any note, debenture, guarantee, loan, letter 
                 of credit, surety-bond or other agreement, instrument or 
                 commitment (or group of related agreements) in effect as of 
                 the date hereof, other than in connection with the Crestar 
                 ESOP Loan, under which Target has created, incurred, 
                 assumed, or guaranteed any indebtedness for borrowed money, 
                 including any agreement or commitment for future loans, 
                 credit or financing, in excess of  $10,000 or under which 
                 Target has imposed a Security Interest on any of the 
                 material Assets, tangible or intangible;

                           (F)  any agreement (other than a teaming 
                 agreement) imposing on Target a restriction or obligation 
                 regarding confidentiality or noncompetition (the 
                 "Confidentiality Agreements), other than Confidentiality 
                 Agreements executed in connection with ordinary course 
                 product testing work performed by Target at its laboratory 
                 facility in Gaithersburg, Maryland for pharmaceutical or 
                 biotechnology companies;

                           (G)  any Contract involving an obligation of 
                 Target to make any payment to any Affiliate of Target, any 
                 Seller, or any of Target's directors, officers or employees 
                 (not including salary or similar compensation reflected on 
                 Target's payroll records or commitments to pay incentive 
                 compensation bonuses in accordance with Targets established 
                 practice and evidenced by written agreements or letters), 
                 except as otherwise contemplated by this Agreement);

                           (H)  any profit sharing, stock option, stock 
                 purchase, stock appreciation, deferred compensation, 
                 severance, or other material plan or arrangement for the 
                 benefit of its current or former directors, officers, and 
                 employees (not including customary fringe benefits such as 
                 accrued vacation or sick leave);

                           (I)  any collective bargaining agreement or any 
                 other agreement with any employee representative of a group 
                 of employees or labor union relating to wages, hours or 
                 other conditions of employment;

                           (J)  any agreement for the employment of any 
                 individual on a full-time, part-time, consulting, or other 
                 basis which is not terminable at-will or which provides 
                 annual compensation in excess of $50,000 or severance 
                 benefits or a termination penalty in excess of $10,000, 
                 except for those otherwise contemplated by this Agreement;

                                         22
<PAGE>

                           (K)  any agreement under which Target has advanced 
                 or loaned any amount which remains outstanding, to any of 
                 its directors, officers, and employees outside the ordinary 
                 course of business and which will not be paid off at or 
                 prior to the Closing or will not constitute an Excluded 
                 Asset; each written warranty, guaranty or other similar 
                 undertaking with respect to contractual performance extended 
                 by Target other than in the ordinary course of business;

                           (L)  each Loss Contract; and

                           (M)  each amendment, supplement, and modification 
                 (whether written or oral) in respect of any of the foregoing.

                      (ii) With respect to each such Material Contract, 
                 except as set forth in section 4(p) of the Disclosure 
                 Schedule, (A) the Contract is legal, valid, binding, 
                 enforceable, and in full force and effect in all material 
                 respects; and (B) no party is in breach or default which 
                 would permit termination, modification, or acceleration 
                 under the Contract. 

                      (iii)     Except as set forth on section 4(p) of the 
                 Disclosure Schedule, Target is not engaged in any 
                 renegotiations of any amounts paid or payable to Target 
                 under current or completed Contracts with any Person having 
                 the contractual or statutory right to demand or require such 
                 renegotiation.  Target has not received any written demand 
                 for such renegotiation in respect of any such Contract.  
                 Except as set forth on section 4(p) of the Disclosure 
                 Schedule, no Person, including any government contracting 
                 officer or prime contractor has given Target written notice 
                 that any material adjustments are required to the terms of 
                 any Material Contracts.

                 (q)  Notes and Accounts Receivable. The amount of all notes, 
accounts receivable, unbilled invoices and other debts due or recorded in the 
Financial Statements, except to the extent the same constitute Excluded 
Assets, (A) will be, subject to the reserves reflected on the Audited Net 
Asset Statement, good and collectible in full in the ordinary course of 
business and in any event not later than one hundred eighty (180) days after 
the Closing Date, or after the date billed, if later (assuming use by Buyer 
of billing and collection practices which are customary in the industry), and 
(B)  are not subject to any counterclaim or setoff except to the extent of 
any such reserve.

                 (r)  Licenses, Permits and Authorizations.  Target maintains 
all material licenses, approvals, consents, franchises and other permits 
(including without limitation, all facility security clearances) of or with 
any governmental regulatory or administrative authority, whether foreign, 
federal, state or local,  necessary for the conduct of the Business as it is 
now conducted (each a "Permit").  All such Permits are in full force and 
effect and there are no proceedings pending or, to the Majority Holder's 
Knowledge, threatened that seek the revocation, cancellation, suspension or 
adverse modification thereof.  Such Permits constitute all of the material 
licenses, approvals, consents, franchises and permits necessary to permit 
Target to own, operate, use and maintain its Assets in the manner in which 
they are now operated and maintained and to conduct the Business 
substantially as currently conducted.  All required filings 

                                         23

<PAGE>

with respect to such Permits have been timely made and all required 
applications for renewal thereof have been timely filed.

                 (s)  Insurance.  Section 4(s) of the Disclosure Schedule 
sets forth the following information with respect to each insurance policy 
(including policies providing property, casualty, liability, and workers' 
compensation coverage and bond and surety arrangements) held by Target: 

                      (i)   the name, address, and telephone number of the 
                            agent;

                      (ii)  the name of the insurer, the name of the 
                            policyholder, and the name of each covered insured;

                      (iii) the policy number and the period of coverage; and

                      (iv)  the amount (including a description of how 
                            deductibles and ceilings are calculated and operate)
                            of coverage.

With respect to each such insurance policy, (A) the policy is legal, valid, 
binding, enforceable, and in full force and effect in all material respects; 
and (B)  no event has occurred which, with notice or the lapse of time, would 
permit termination, modification, or acceleration, under the policy.  Section 
4(s) of the Disclosure Schedule describes any material self-insurance 
arrangements affecting Target.  To the Majority Holder's knowledge, Target is 
not a named insured or otherwise the beneficiary of coverage under any 
insurance policy held by any other Person.

                 (t)  Litigation.  Section 4(t) of the Disclosure Schedule 
sets forth each instance in which Target (i) is subject to any outstanding 
injunction, judgment, order, decree, ruling, or charge or (ii) is a party or 
has received written notice that it has been threatened to be made a party to 
any action, suit, proceeding, hearing, or investigation of, in, or before any 
court or quasi-judicial or administrative agency of any federal, state, 
local, or foreign jurisdiction or before any arbitrator.

                 (u)  Product Warranty.  Substantially all of the products 
manufactured, sold, leased, and delivered by Target have conformed in all 
material respects with all applicable contractual commitments.  Target has no 
material liability for replacement or repair thereof or other damages in 
connection therewith, subject only to (i) the express provisions of any of 
the Material Contracts, and (ii) the reserve for product warranty claims set 
forth in the Financial Statements, as adjusted for operations and 
transactions through the Closing Date in accordance with the past custom and 
practice of Seller.

                 (v)  Employees.  Except as set forth in section 4(v) of the 
Disclosure Schedule, as of the date of this Agreement, no Executive Officer, 
which is defined for the purposes of this 4(v) as the Chief Executive 
Officer, the Chief Operating Officer and Chief Financial Officer of Target, 
has given Target written notice of plans to terminate employment with Target 
during the next twelve (12) months, except for Majority Holder, as 
contemplated by the transactions in this 


                                         24

<PAGE>

Agreement and the Ancillary Agreements.  Except as set forth in section 
4(p)(i)(I) of the Disclosure Schedule, Target is not a party to or bound by 
any collective bargaining agreement.  There are no complaints against Target 
pending before the National Labor Relations Board or any similar state or 
local labor agency by or on behalf of any Employee of Target.  Target has 
complied in all material respects with all laws, rules and regulations 
relating to employment, equal employment opportunity, nondiscrimination, 
immigration, wages, hours, benefits, collective bargaining, the payment of 
social security and similar taxes (hereinafter collectively referred to as 
the "Employment Laws").  Target is not liable for the payment of taxes, 
fines, penalties or other amounts, however designated, for failure to comply 
with any of the foregoing Employment Laws.  Except as set forth in section 
4(p) of the Disclosure Schedule, as of the date of this Agreement, there are 
no representation questions, arbitration proceedings, labor strikes, slow 
downs or stoppages, grievances or other labor disputes pending or, to 
Target's Knowledge, threatened with respect to the Target's Employees.  
Target has no obligations relating to former employees, no longer employed by 
Target, except to the extent contemplated by this Agreement and the Ancillary 
Agreements.

                 (w)  Environmental Matters.  Target owns no real estate.   
To Target's knowledge, (i) Target has complied with and is not in violation 
of any Environmental Laws, (ii) Target is not required to hold or obtain any 
environmental permits, certificates, consents or other settlements 
agreements, licenses, approvals, registrations or authorizations under any 
Environmental Laws, other than those that are currently held by Target in 
compliance with applicable federal, state or local law, (iii) no notice, 
citation, summons or order has been issued, no complaint has been filed, no 
penalty has been assessed and no investigation or review is pending or 
threatened by any governmental or other entity relating to the Leased Real 
Property or Target's operations with respect to any alleged violation by 
Target of any Environmental Law or with respect to any use, possession, 
generation, treatment, storage, recycling, transportation or disposal of any 
Hazardous Substances by or on behalf of Target, (iv) there are no facts or 
circumstances related to environmental matters concerning the Leased Real 
Property that could reasonably be expected to lead to any future 
environmental claims against Target under current Environmental Laws, and (v) 
there have been no environmental inspections, investigations, studies, 
audits, tests, reviews or other analyses conducted in relation to any Leased 
Real Property, Target or the Business which have been provided or reported to 
Target, except for those inspections periodically conducted under existing 
licenses or permits.  

                 (x)  Employee Benefits.

                      (i)  Section 4(x) of the Disclosure Schedule lists each 
                 Employee Benefit Plan that Target maintains or to which 
                 Target contributes.

                      (ii) Each such Employee Benefit Plan (and each related 
                 trust, insurance contract, or fund) complies in all material 
                 respects with the applicable requirements of ERISA, the 
                 Code, and other applicable laws.

                                         25

<PAGE>

                      (iii)     All required reports and descriptions 
                 (including Form 5500 Annual Reports, Summary Annual Reports, 
                 PBGC-l's, and Summary Plan Descriptions) have been filed or 
                 distributed appropriately with respect to each such Employee 
                 Benefit Plan.

                      (iv) All contributions for any period ending on or 
                 before the Closing Date which are not yet due have been paid 
                 to each such Employee Pension Benefit Plan or accrued in 
                 accordance with the past custom and practice of Target. All 
                 premiums or other payments for all periods ending on or 
                 before the Closing Date have been paid with respect to each 
                 such Employee Benefit Plan which is an Employee Welfare 
                 Benefit Plan.

                      (v)  Each such Employee Benefit Plan which is an 
                 Employee Pension Benefit Plan meets the requirements of a 
                 "qualified plan" under Code section 401(a) and has received 
                 a favorable determination letter from the Internal Revenue 
                 Service.

                      (vi) Copies of the plan documents and summary plan 
                 descriptions, the most recent determination letter received 
                 from the Internal Revenue Service, the most recent Form 5500 
                 Annual Report, and all related trust agreements, insurance 
                 contracts, and other funding agreements which implement each 
                 such Employee Benefit Plan have been made available to 
                 Buyer.    

                      (vii)     With respect to each Employee Benefit Plan 
                 that Target maintains or ever has maintained or to which it 
                 contributes, ever has contributed, or ever has been required 
                 to contribute, Target has not incurred any material 
                 liability to the PBGC (other than PBGC premium payments) or 
                 otherwise under Title IV of ERISA (including any withdrawal 
                 liability) or under the Code with respect to any such 
                 Employee Benefit Plan which is an Employee Pension Benefit 
                 Plan.

                      (viii)    Target never has contributed to, or ever has 
                 been required to contribute to, any Multiemployer Plan or 
                 has any material liability (whether known or unknown, 
                 whether asserted or unasserted, whether absolute or 
                 contingent, whether accrued or unaccrued, whether liquidated 
                 or unliquidated, and whether due or to become due), 
                 including any withdrawal liability, under any Multiemployer 
                 Plan.

                      (ix) Target does not maintain nor ever has maintained, 
                 or contribute, ever has contributed, or ever has been 
                 required to contribute to any Employee Welfare Benefit Plan 
                 providing medical, health, or life insurance or other 
                 welfare-type benefits for current or future retired or 
                 terminated employees, their spouses, or their dependents 
                 (other than in accordance with Code section 4980B).

                 (y)  Guaranties.  Except for Target's guaranty of  the 
Crestar ESOP Loan, Target is not a guarantor or otherwise is responsible for 
any liability or obligation (including indebtedness) of any other Person.

                                         26

<PAGE>

                 (z)  Government Contracts.  With respect to each Government 
                      Contract:

                      (i)  During the past five (5) years, no payment has 
                 been made by Target, or by any Person authorized to act on 
                 Target's behalf, to any Person in connection with any such 
                 Government Contracts, in violation of applicable procurement 
                 laws or regulations or in violation of (or requiring 
                 disclosure pursuant to) the Foreign Corrupt Practices Act.

                      (ii) Section 4(z) of the Disclosure Schedule sets forth 
                 all outstanding or pending change orders which could 
                 reasonably be deemed to involve an amount in excess of 
                 $10,000 and all claims, requests for equitable adjustments, 
                 outstanding or pending subcontractor, supplier or vendor 
                 claims, and all teaming agreements, joint venture 
                 arrangements and agency agreements, with respect to such 
                 Government Contracts; provided, however, that this section 
                 4(2)(ii) is not intended to include ordinary course accounts 
                 payable or purchase orders with respect to such Government 
                 Contracts.

                      (iii)     Target's accounts receivable, unbilled costs 
                 and accrued profits (less customer progress payments), notes 
                 receivable, contracts in progress, accounts payable and 
                 notes payable (collectively the "Receivables and Unbilled 
                 Costs") included in the January 31 Balance Sheet shall be 
                 recorded on its books and records in the ordinary course of 
                 business in accordance with GAAP applied on a consistent 
                 basis with prior years, subject to the adjustments referred 
                 to in section 4(g) above.

                      (iv) With respect to each Government Contract, except 
                 as set forth in Section 4(z) of the Disclosure Schedule, (A) 
                 Target has complied with all material terms and conditions 
                 of such Government Contract, including all clauses, 
                 provisions and requirements incorporated expressly, by 
                 reference or by operation of law therein, (B) Target has 
                 complied with all requirements of applicable laws pertaining 
                 to such Government Contract, (C) all representations and 
                 certifications executed, acknowledged or set forth in such 
                 Government Contract were complete and correct in all 
                 material respects as of their effective date, and Target has 
                 complied in all material respects with all such 
                 representations and certifications, and (D) neither the 
                 United States Government nor any prime contractor, 
                 subcontractor or other Person has notified Seller in 
                 writing, that Target has breached or violated any applicable 
                 law, or any material certification, representation, clause, 
                 provision or requirement pertaining to such Government 
                 Contract.  Anything herein to the contrary notwithstanding, 
                 to the extent any breach of this representation would also 
                 constitute a breach of the representation made in section 
                 4(u), such breach shall be subject to the terms of section 
                 6(d) below.

                      (v)  Target is not currently, and has not been in the 
                 past five (5) years, debarred or suspended from doing 
                 business with any Federal government agency, nor has any 
                 such suspension or debarment action been commenced.  No show 
                 cause notices, notices of termination for default or cure 
                 notices have been issued against Target in the past five (5) 
                 years, except, as to any such cure notices, those with 
                 respect to which cure has been made in the ordinary course 
                 of business.

                                         27

<PAGE>

                      (vi) Target is not currently and has not been in the 
                 past five years, under administrative, civil or criminal 
                 indictment or, to the Majority Holder's Knowledge, 
                 investigation, with respect to any alleged irregularity, 
                 misstatement or omission arising under or in any way 
                 relating to any of such Government Contracts.

                      (vii)     No security clearances are required to be 
                 held by Target for the execution of its obligations under 
                 any such Government Contracts; Target has never been denied 
                 a security clearance necessary to perform any such 
                 Government Contract unless such clearance has later been 
                 granted.

                 (aa) Brokers' Fees.  Except for the amount payable to John 
C. Smith pursuant to section 4 of the Prior Smith Employment Agreement, 
Target has no liability or obligation to pay any fees or commissions to any 
broker, finder, or agent with respect to the transactions contemplated by 
this Agreement. 

                 (bb) Backlog.  Section 4(ab) of the Disclosure Schedule 
identifies for each Government Contract constituting part of the Assets, 
Target's reasonable estimate, based on Target's past experience with such 
Government Contract and other experience in the industry, of the amounts to 
be recognized under the term of such Government Contract during the projected 
term thereof, assuming all option years are exercised.  Notwithstanding the 
provisions of this section 4(ab), the Parties recognize, (A) that Section 
8(a) Contracts may be terminated by the SBA upon a change in control of 
Target (provided, however that Majority Holder and Target will use all 
reasonable efforts to avoid such termination pursuant to section 6(b) below), 
and (B), that a number of such Government Contracts (as indicated in the 
Disclosure Schedule) are IDIQ contracts, as to which no specific quantities 
are designated, and that there can be no assurance that the actual experience 
under any particular Government Contract will conform to such estimates.

                 (cc) Disclosure.  The representations and warranties 
contained in this section 4 do not contain any untrue statement of a material 
fact or omit to state any material fact necessary in order to make the 
statements and information contained in this section 4 not misleading.

5.  Pre-Closing Covenants.  The Parties agree as follows with respect to the 
period between the execution of this Agreement and the Closing.

                 (a)  General.  Majority Holder will use his or its 
reasonable efforts to cooperate with the other partes in order to consummate 
and make effective the transactions contemplated by this Agreement.

                 (b)  Operation of Business.   From the date hereof to the 
Closing Date, Target and Majority Holder shall not, and Majority Holder will 
not permit Target to, engage in any practice, take any action, or enter into 
any transaction outside the ordinary course of the Business.  Without 
limiting the generality of the foregoing, except with the written consent of 
Buyer or with respect solely to the Excluded Assets, Target shall not and 
Majority Holder will not cause Target to:  

                                         28

<PAGE>

                      (i)  change or amend the Articles of Incorporation or 
                 Bylaws of Target;

                      (ii) enter into, extend, materially modify, terminate 
                 or renew any Material Contract;

                      (iii)     sell, assign, transfer, convey, lease, 
                 mortgage, pledge or otherwise dispose of or encumber any 
                 material Assets, or any interests therein, except in the 
                 ordinary course of business;

                      (iv) except as otherwise required by law or in the 
                 ordinary course of business,  take any action relating to 
                 Business Employees (as hereinafter defined) with respect to 
                 the grant of any bonus, severance or termination pay 
                 (otherwise than pursuant to policies or agreements of Target 
                 in effect on the date hereof or in section 5(c) of the 
                 Disclosure Schedule), or with respect to any increase of 
                 benefits payable under its severance or termination pay 
                 policies or agreements in effect on the date hereof or 
                 increase in any material respect the compensation or fringe 
                 benefits of any employee or pay any benefit not required by 
                 any existing Employee Plan, agreement or policy; 

                      (v)  make any change in the key management structure of 
                 Target, including, without limitation, the hiring of 
                 additional officers or the termination of existing officers 
                 other than in the ordinary course of business; 

                      (vi) adopt, enter into or amend any Employee Plan, 
                 agreement (including, without limitation, any collective 
                 bargaining or employment agreement), trust, fund or other 
                 arrangement for the benefit or welfare of its employees;

                      (vii)     acquire by merger or consolidation with, or 
                 merge or consolidate with, or purchase substantially all of 
                 the assets of, or otherwise acquire any material assets or 
                 business of any corporation, partnership, association or 
                 other business organization or division thereof;

                      (viii)    make any capital expenditures or commitments 
                 in excess of $10,000 in the aggregate, except any such 
                 expenditures disclosed to Buyer prior to the date hereof;

                      (ix) make any material loans or advances to any Person;

                      (x)  make any material tax election or settlement or 
                 compromise with tax authorities which would affect the 
                 Assets or the Business after the Closing hereunder, except 
                 as set forth in section 4(l) of the Disclosure Schedule;

                      (xi) intentionally do any other act which would cause 
                 any representation or warranty in this Agreement to be or 
                 become untrue in any material respect; 

                      (xii)     fail to maintain the tangible Assets in their 
                 current state of repair, excepting normal wear and tear or 
                 casualty, or fail to replace consistent with Target's past 
                 practice inoperable, worn out, obsolete or destroyed Assets;

                                         29

<PAGE>

                      (xiii)    make any changes in accounting policies or 
                 practices; provided that Majority Holder shall cause Target 
                 to report to Buyer promptly any such changes Target proposes 
                 to make, and Buyer shall not withhold its consent to any 
                 such change if the same would not reasonably be deemed to 
                 have an adverse effect on Target or Buyer after the Closing;

                      (xiv)     declare, set aside, or pay any dividend or 
                 make any distribution with respect to its capital stock or 
                 redeem, purchase, or otherwise acquire any of its capital 
                 stock; or 

                      (xv) enter into any agreement, or otherwise become 
                 obligated, to do any action prohibited hereunder.

                 (c)  Preservation of Business.  Target will make reasonable 
efforts, and Majority Holder will make all reasonable efforts to cause 
Target, to keep the Business and Assets substantially intact, including its 
present operations, physical facilities, and relationships with employees, 
lessors, licensors, suppliers and customers, subject to customary commercial 
practice. 

                 (d)  Full Access.  Majority Holder and Target will permit 
representatives of the Buyer to have full access at all reasonable times, and 
in a manner so as not to interfere with the normal business operations of 
Target, to all premises, properties, personnel, books, records (including tax 
records), contracts, and documents of or pertaining to the Business.

                 (e)  Confidentiality.  Except (i) for any governmental 
filings required in order to complete the transactions, and (ii) as Buyer and 
the Majority Holder may agree or consent to in writing, each of Buyer and 
each Seller will treat and hold as such any Confidential Information it 
receives from the other Party or its representatives in the course of the 
reviews contemplated by section 5(e) or otherwise, and will not use any of 
the Confidential Information except in connection with this Agreement; 
provided, however, that any party hereto may disclose such information to its 
legal and financial advisors, lenders, financing sources and their respective 
legal advisors and representatives so long as such Persons agree to maintain 
the confidentiality of such information in accordance with this section 5(f). 
 If this Agreement is terminated for any reason whatsoever, each Party will 
return to the other Party or destroy all tangible embodiments (and all 
copies) of the Confidential Information, including all information prepared 
by the receiving party or such receiving party's representatives, which are 
in its possession or the possession of its representatives. Any provision 
hereof to the contrary notwithstanding, information not so destroyed (or 
returned) will remain subject to these confidentiality provisions 
(notwithstanding any termination of this Agreement) until the second 
anniversary of the date of this Agreement.  The foregoing confidentiality 
provisions shall not apply to such portions of the information received which 
(i) are or become generally available to the public through no action by the 
receiving party or by such party's representatives, (ii) are or become 
available to the receiving party on a nonconfidential basis from a source, 
other than the disclosing party or its representatives, which the receiving 
party believes, after reasonable inquiry, is not prohibited from disclosure 
of such information by a contractual, legal or fiduciary obligation, and 
shall not 

                                         30

<PAGE>

apply to any disclosure after the Closing by Buyer of any information 
relating solely to Target (other than information relating to the Excluded 
Assets or Excluded Liabilities).

                 (f)  Consents; Reasonable Effort; Cooperation.  Target and 
Majority Holder will make reasonable efforts to obtain  in writing the 
consents of third parties, in connection with the consummation of the 
transactions, listed on Exhibit D attached hereto, such consents to be 
substantially in the form set forth in such Exhibit D (the "Required 
Consents").   

                 (g)  Notice of Developments.  Buyer will give written notice 
to the Seller Representative of any development causing a breach of any of 
the representations and warranties in section 3(a) which has not previously 
been disclosed to the Seller Representative, with reasonable promptness after 
Buyer gains Knowledge thereof.  The Seller Representative will give written 
notice to Buyer of any development causing a breach of any of the 
representations and warranties in section 3(b) or 4 above relating to the 
Sellers, Target, the Business, the Assets or the transactions contemplated 
hereby, which has not previously been disclosed, with reasonable promptness 
after Target has Knowledge thereof.  Buyer will give the Seller 
Representative notice, as soon as reasonably practicable after Buyer has 
Knowledge thereof, of any material inaccuracy of the representations and 
warranties of the Majority Holder with regard to the Business or the Assets 
of which Buyer gains Knowledge from Buyer's or its agents' due diligence 
investigation with regard to this Agreement.   

                 (h)  Exclusivity.  Prior to the Closing or other termination 
of this Agreement in accordance with the terms hereof, the Majority Holder 
will not (and the Majority Holder will not cause or permit Target to) accept 
an offer from any Person relating to the acquisition of any capital stock or 
other voting securities, or any portion of the Assets, of Target, other than 
in the ordinary course of business (including any acquisition structured as a 
merger, consolidation, or share exchange).  The Majority Holder will not vote 
his Target Shares in favor of any such nonpermitted acquisition structured as 
a merger, consolidation, or share exchange.

                 (i)  No Solicitations.  From the date hereof through the 
Closing Date or termination of this Agreement in accordance with the terms 
hereof, neither Target nor the Majority Holder shall directly or through an 
agent solicit, participate in or initiate discussions or negotiations with 
any Person or group of Persons (other than Buyer or any of its Affiliates) 
concerning any merger, sale of assets, sale of shares of capital stock or 
similar transactions involving Target or the Business.  

                 (j)  Employee Matters.   Upon the Closing, Buyer will cause 
Target to continue the  employment of each employee of Target ("Business 
Employees") except for such individuals, if any, as are designated on section 
4(v) of the Disclosure Schedule (the "Excluded Employees") at a comparable 
level of salary and comparable benefits as currently provided to such 
Business Employee by Target.  Notwithstanding the foregoing, Buyer shall not 
thereafter be restricted from any modification in terms of employment or 
termination of the Business Employees in the ordinary course of business.  It 
is acknowledged and agreed that Buyer shall have no obligation to pay, or 
cause Target after the Closing to pay, any severance or termination payments 
to any Excluded Employee by virtue of the termination of their employment 
with Target effective as of the Closing.

                                         31

<PAGE>

                 (k)  Updated Contract Backlog and Financial Statements.  
Prior to the Closing, (i) Target shall provide an updated estimate of the 
amounts anticipated to be recognized during the remaining term of the 
Government Contracts, prepared on the same basis as described in the 
representation set forth in section 4(ab) of this Agreement, and (ii) Target 
shall deliver to Buyer on a timely basis any interim financial statements 
prepared by Target in the ordinary course of business.

6.  Post-Closing Covenants.  The Parties agree as follows with respect to the 
period following the Closing.

                 (a)  General.  

                      (i)  In case at any time after the Closing any further 
                 action is necessary to carry out the purposes of this 
                 Agreement, the Majority Holder, or any of the Sellers to the 
                 extent their action is required, will take such further 
                 action (including the execution and delivery of such further 
                 instruments and documents) as any other Party reasonably may 
                 request, all at the sole cost and expense of the requesting 
                 Party (unless the requesting Party is entitled to 
                 indemnification therefor under section 9 below).  In 
                 particular, (A) in connection with any actions taken by 
                 Target or Sellers pursuant to 13 C.F.R. 124.317(d) to 
                 provide for the proper transfer of each outstanding Section 
                 8(a) Contract to Buyer and to ensure that each such Section 
                 8(a) Contract remain in effect notwithstanding the transfer 
                 of ownership of Target, the Sellers will take such 
                 reasonable actions required after Closing to obtain the 
                 approval of such transfer from the Administrator of the SBA. 
                 The Sellers shall consult with Buyer prior to the delivery 
                 of, and give Buyer the opportunity to comment on, any notice 
                 which Sellers are required to provide to the SBA pursuant to 
                 the terms of Target's Section 8(a) Contracts or the Small 
                 Business Act, and (B) in connection with ESOP following 
                 Closing, the Parties shall cooperate with the Trustees of 
                 the ESOP to prepare any filings with the Internal Revenue 
                 Service or otherwise and to take all actions that are 
                 reasonably deemed necessary by the Trustees of the ESOP for 
                 proper termination of the ESOP.  

                      (ii) The Parties acknowledge and agree that from and 
                 after the Closing the Buyer will be entitled to possession 
                 of the Books and Records (other than such Books and Records 
                 relating solely to the Excluded Assets and Excluded 
                 Liabilities, as to which Buyer shall be entitled to 
                 possession of a complete and accurate copy), but will 
                 provide copies thereof to Sellers promptly upon request 
                 therefor.  Buyer will provide all reasonable cooperation 
                 with Sellers in connection with obtaining any information 
                 reasonably necessary for preparation of financial statements 
                 and tax returns.

                 (b)  Governmental Consents.  Each of Buyer, Majority Holder 
and Target consent to give any notices to, make any filings with, and to use 
its reasonable efforts to obtain any authorizations, consents, and approvals 
of governments and governmental agencies in connection with the matters 
referred to in sections 3(a)(iii) and 3(b)(ii) and 4(c) above.   Target and 
Majority Holder shall take all actions reasonably required pursuant to 13 
C.F.R. 124.317(d) to provide for the proper transfer of each outstanding 
Section 8(a) Contract to Buyer and will use their 

                                         32

<PAGE>

reasonable efforts to cause each such Section 8(a) Contract to remain in 
effect notwithstanding the transfer of ownership of Target; and to take such 
reasonable actions thereafter to obtain the approval of such transfer from 
the administrator (the "Administrator") of the SBA; the parties recognize 
that such approval cannot be assured, that the foregoing efforts of the 
Majority Holder shall be part of, and not in addition to, the services 
contemplated by the Consulting Agreement provided for in section 7(a)(viii) 
below, and that the Majority Holder shall not be obligated to expend his 
personal funds in this regard.  Notwithstanding the foregoing, Target and 
Majority Holder shall consult with Buyer prior to the delivery of, and give 
Buyer the opportunity to comment on, any notice which Target or Majority 
Holder are required to provide to the SBA pursuant to the terms of Target's 
Section 8(a) Contracts or the Small Business Act.

   (c)  Litigation Support.  In the event and for so long as any Party 
actively is contesting or defending against any action, suit, proceeding, 
hearing, investigation, charge, complaint, claim, or demand in connection 
with (i) any transaction contemplated under this Agreement or (ii) any fact, 
circumstance, condition, occurrence, event, incident, action, failure to act, 
or transaction prior to the Closing Date directly involving the Business, 
each of the other Parties will make all reasonable efforts to cooperate with 
him or it and his or its counsel in the contest or defense, make available 
their personnel, and provide such testimony and access to their books and 
records as shall be reasonably necessary in connection with the contest or 
defense, all at the sole cost and expense of the contesting or defending 
Party (unless the contesting or defending Party is entitled to 
indemnification therefor under section 9 below). 

   (d)  The parties acknowledge that products sold and delivered by Target 
under the Government Contracts prior to the Closing Date may be subject to 
certain warranties, relating to the condition, suitability or conformity of 
such products to specified requirements, contained in such Government 
Contracts (the "Product Warranties"), even though Target has not manufactured 
any of such products.  Majority Holder shall indemnify Buyer against any 
liability for breach of any such Product Warranties, pursuant to the 
provisions of section 9 below, solely to the extent such Product Warranties 
exceed the coverage of any warranties or other protections provided by the 
manufacturer of such products, and provided that Buyer makes a claim with 
respect to such breach within the two-year period following the Closing.  
Prior to making any claim against Majority Holder with respect to any claim 
or liability relating to such Product Warranties, Buyer shall make reasonable 
efforts for a period of ninety (90) days from the date Buyer obtains 
Knowledge of such warranty claim to (i) determine whether the claimed defect 
or other problems with the product is covered by a manufacturer's warranty or 
similar protection, and (ii) obtain protection against or reimbursement for 
any such claim or liability from the manufacturer of the applicable product.  
Majority Holder shall provide all reasonable cooperation in such efforts by 
Buyer.

   (e)  Except as otherwise set forth above, the terms of this section 6 
shall survive the Closing for a period of two (2) years.

                                         -33-
<PAGE>
7. Conditions to Obligation to Close.

   (a)  Conditions to Obligation of the Buyer.  The obligation of the Buyer 
to consummate the transactions to be performed by it in connection with the 
Closing is subject to satisfaction of the following conditions:

        (i)  the representations and warranties set forth in sections 3(b) and 4
   above shall be true and correct in all material respects at and as of the 
   Closing Date (except for those expressly relating to a different date);

       (ii)  Sellers shall have performed and complied in all material respects 
   with all of their covenants hereunder through the Closing;  

      (iii)  no action, suit, or proceeding shall be pending before any court 
   or quasi-judicial or administrative agency of any federal, state, local, 
   or foreign jurisdiction or before any arbitrator wherein an unfavorable 
   injunction, judgment, order, decree, ruling, or charge would  prevent 
   consummation of any of the transactions contemplated by this Agreement or 
   have a Material Adverse Effect;

      (iv)  the Buyer shall have received from counsel to the Sellers 
   opinions, addressed to the Buyer, reasonably satisfactory to Buyer and its 
   counsel and dated as of the Closing Date;

       (v)  Buyer shall have received from Target and Sellers such 
   certificates of  duly authorized officers and others to evidence 
   compliance with the conditions set forth in this section 7(a) as may be 
   reasonably requested by Buyer;

      (vi)  Buyer shall have received the Required Consents;
 
     (vii)  Each of John C. Smith and Paul H. Tardif shall have entered into 
   the Employment Agreements with R.O.W. Sciences, Inc. in the form approved 
   by Buyer, and executed such Employment Agreements, subject to consummation 
   of the transactions contemplated hereby, as of the date of this Agreement;

    (viii)  The Majority Holder shall also have entered into a Consulting 
   Agreement with R.O.W. Sciences, Inc. in the form approved by Buyer and the 
   Majority Holder, and executed such Consulting Agreement, subject to 
   consummation of the transactions contemplated hereby, as of the date of 
   this Agreement; 

      (ix)  Majority Holder shall have executed the acknowledgment at the end 
   of the Note; and

       (x)  The Crestar ESOP Loan shall have been repaid and the Crestar ESOP 
   Lien shall have been released.

                                         -34-
<PAGE>
The Buyer may waive any condition specified in this section 7(a) in writing, or
by consummating the transactions contemplated hereby.

   (b)  Conditions to Obligation of the Sellers.  The obligation of the
Sellers to consummate the transactions to be performed by them in connection
with the Closing is subject to satisfaction of the following conditions: 

       (i) the representations and warranties set forth in section 3(a) above 
   shall be true and correct in all material respects at and as of the 
   Closing Date (except for those expressly relating to a different date);

      (ii) the Buyer shall have performed and complied in all material 
   respects with all of its covenants hereunder through the Closing;

     (iii) no action, suit, or proceeding shall be pending before any court 
   or quasi-judicial or administrative agency of any federal, state, local, 
   or foreign jurisdiction or before any arbitrator wherein an unfavorable 
   injunction, judgment, order, decree, ruling, or charge would prevent 
   consummation of any of the transactions contemplated by this Agreement;

      (iv) the Sellers shall have received from counsel to the Buyer an 
   opinion addressed to the Sellers, reasonably satisfactory to Sellers and 
   their counsel, and dated as of the Closing Date;

       (v) Sellers shall have received from Buyer resolutions adopted by the 
   Board of Directors of Buyer approving this Agreement, the Ancillary 
   Agreements and the transactions contemplated hereby and thereby, certified 
   by Buyer's corporate secretary or assistant secretary;

      (vi) Buyer shall have executed and delivered to any applicable Seller 
   the Ancillary Agreements to which such Seller is a party; and

     (vii) Sellers shall have received from Buyer such certificates of its 
   duly authorized officers and others to evidence compliance with the 
   conditions set forth in this section 7(b) as may be reasonably requested 
   by Sellers.

The Majority Holder may waive any condition specified in this section 7(b) in
writing or by consummating the transactions contemplated hereby.

8.  Consents To Assignment or Novation; Risk of Loss.  

   (a)  Anything in this Agreement to the contrary notwithstanding, this 
Agreement shall not constitute an agreement to assign or novate any Contract, 
or any claim or right or any benefit arising thereunder or resulting 
therefrom, if an attempted assignment or novation thereof, without the 
consent of a third party thereto, would constitute a breach thereof or in any 
way adversely affect the rights of Target thereunder.  If such consent is not 
obtained, or if an attempted 


                                         -35-
<PAGE>

assignment or novation thereof would be ineffective or would affect the 
rights thereunder so that Target would not receive all such rights, Sellers 
and Buyer will cooperate, in all reasonable respects but without material 
cost to Sellers which is not promptly reimbursed by Buyer, to obtain such 
consent as soon as practicable.   Recognizing that any action taken by 
Sellers pursuant to this section 8(a) is at the request of and for the 
benefit of Buyer, Buyer agrees to indemnify and hold harmless Sellers from 
and against any claim, loss, liability, damages, cost or expense (including 
reasonable attorneys' fees and expenses) arising from or related to any 
breach or default under such contracts by Target following the Closing Date 
or any action taken by Sellers pursuant to the terms of this section 8(a) at 
the request of Buyer.   No failure of a Contract to be transferred shall be 
deemed to affect any amount payable to Sellers pursuant to any provision of 
section 2 of this Agreement (subject to any set-off rights expressly provided 
for in this Agreement), except to the extent such failure is the result of 
any breach by Target or any Seller of any covenant, representation or 
warranty contained herein, and except that the parties recognize that the 
Additional Purchase Price shall be payable only if and to the extent Target 
receives Section 8(a) Contract Revenue.  

   (b)  Risk of Loss.  If any material portion of the tangible Assets is 
destroyed or damaged by fire or any other cause prior to the Closing Date 
which destruction or damage disables Target from carrying on, or materially 
impairs Target's ability to carry on, a material part of the Business, the 
Seller Representative shall give written notice to Buyer as soon as 
reasonably practicable after, but in any event within five (5) business days 
of, Majority Holder obtaining Knowledge thereof, including information as to 
the amount of insurance, if any, believed to cover such destruction or 
damage.  In such event, prior to the Closing, Buyer shall have the option, 
which shall be exercised by written notice to the Seller Representative 
within ten (10) days after receipt of the Seller Representative's notice or, 
if there are not ten (10) days prior to the Closing Date, as soon as 
practicable prior to the Closing Date, of (i) closing with such Assets in 
their destroyed or damaged condition, in which event Buyer shall be entitled 
to the proceeds of any insurance or other proceeds payable with respect to 
such loss and, subject to the limitations set forth in section 9 hereof, to 
indemnification for any uninsured portion of such loss to the extent provided 
by such section 9, and the full purchase price shall be paid, (ii) if agreed 
by the Seller Representative, excluding such Assets from the transaction 
contemplated hereby, in which case the purchase price shall be reduced by the 
amount allocated to such Assets, as mutually agreed between the Parties, and 
Sellers shall be entitled to promptly receive any insurance or other proceeds 
payable with respect to such loss, or (iii) after providing Target with a 
reasonable opportunity to repair such destruction or damage, terminating this 
Agreement in accordance with section 11.

9.  Survival; Indemnification.

   (a)  Survival of Representations and Warranties.  All of the 
representations and warranties of the Parties contained in this Agreement 
shall survive the Closing and continue in full force and effect for a period 
of two (2) years thereafter except as otherwise expressly set forth herein 
and except that  those representations made with respect to the matters set 
forth in sections 4(a) (ii) and (iii), 4(j), 4(l), 4(w), 4(x) and 4(z) and 
any claim with respect thereto shall survive until ninety (90) days after the 
expiration of the applicable statute of limitations (with 

                                         -36-
<PAGE>

extensions) with respect to the matters addressed in those sections, or (ii) 
as otherwise expressly set forth herein.  The termination after Closing of 
the representations and warranties provided herein shall not affect the 
rights of a party in respect of any claim made by such party in a writing 
received by the other party prior to the expiration of the applicable 
survival period provided herein.

   (b)  Indemnification Provisions for Benefit of the Buyer.

        (i)  In the event Target or Buyer suffers Adverse Consequences after 
        the Closing as a result of (A) the breach by Sellers or Target of any 
        of their respective representations and warranties contained in 
        section 3(b) or 4 hereof or of any covenant in section 2, 5, 6 or 10 
        hereof, (B) any third party claim with respect to the operation of 
        the Business or other actions of Target prior to the Closing Date 
        (except to the extent any such claim constitutes a liability included 
        on the Audited Net Asset Statement), (C) any Excluded Liability or 
        Pre-Closing Environmental Liability, or (D) any material breach or 
        default by Target under any of the Contracts prior to the Closing 
        Date (each, a "Buyer Indemnification Matter"),  provided that the 
        Buyer makes a written claim for indemnification against Majority 
        Holder pursuant to section 13(h) below within the survival period 
        described above, then the Majority Holder agrees to indemnify and 
        hold harmless the Buyer and its Affiliates, and their respective 
        directors, officers, shareholders and employees (collectively, the 
        "Buyer Parties") from and against any Adverse Consequences the Buyer 
        Parties may suffer through and after the date of the claim for 
        indemnification (including any Adverse Consequences the Buyer Parties 
        may suffer after the end of any applicable survival period) directly 
        resulting from or caused by such Buyer Indemnification Matter 
        (calculated as set forth in subsection (e) below); provided, however, 
        that Majority Holder shall not have any obligation to indemnify any 
        of the Buyer Parties from or against any Adverse Consequences 
        resulting from any Buyer Indemnification Matter until the Buyer 
        Parties have suffered Adverse Consequences by reason of all such 
        Buyer Indemnification Matters in excess of $250,000 in the aggregate, 
        after which point Majority Holder will be obligated only to indemnify 
        the Buyer Parties from and against further such Adverse Consequences; 
        further provided, that the limitations set forth above shall not 
        apply to (x) any breach of a covenant set forth in sections 5 or 6 of 
        this Agreement, or of the representation set forth in sections 
        4(a)(ii) or 4(l)(ix), hereof, or (y) any indemnification for any 
        Excluded Liability.

        (ii) Notwithstanding the provisions of section 9(b)(i), the maximum
        amount for which the Majority Holder may be liable shall be 
        limited to the outstanding principal amount of the Note as of the 
        date on which the claim for indemnification is made, and the 
        exclusive source for discharging such liability of the Majority 
        Holder shall be a reduction of such outstanding principal amount 
        of the Note; provided, however, that anything in this Agreement to 
        the contrary notwithstanding, the limitation provided for in this 
        section 9(b)(ii) shall not apply to any indemnification for any 
        matter described in item (e) of the definition of Excluded 
        Liability.

                                         -37-
<PAGE>

           (iii) Notwithstanding the provisions of this section 9(b), to the 
        extent that claims against the Majority Holder result in an 
        obligation to pay Buyer, the Majority Holder's liability will be 
        offset by any amount that is an Allowable Cost, direct or indirect, 
        that is permissible under the Federal Acquisition Regulations (the 
        "FAR") that may be reimbursed to the Buyer following the Closing 
        Date.  For purposes of this subsection (iii), Allowable Cost shall 
        mean any allowable cost, as defined under the FAR, which Buyer 
        believes in good faith, based on such definition, is appropriate for 
        submission to the appropriate federal contracting agency and which, 
        upon submission to such federal contracting agency, has in fact been 
        confirmed by such agency to be an allowable cost reimbursable to the 
        Buyer, or has in fact been so reimbursed.

   (c)  Indemnification Provisions for Benefit of Sellers.  In the event (i) 
the Buyer breaches any of its representations, warranties, and covenants 
contained herein, or (ii) after the Closing, Target takes or fails to take 
any action under any Contract which constitutes part of the Assets, or 
fails fully and timely to perform its obligations with respect to any 
liabilities existing as of the Closing and not constituting Excluded 
Liabilities (each, a "Seller Indemnification Matter"), and a claim is made 
against any of the Sellers or any of the Seller Parties (as defined below) 
with respect thereto, provided that any of the Sellers or such Seller 
Party makes a written claim for indemnification against the Buyer pursuant 
to section 13(h) below within the survival period described above, then 
the Buyer agrees to indemnify, save, and hold harmless any of such Sellers 
and any Sellers' Affiliates, and their respective directors, officers, 
shareholders and employees (collectively, the "Seller Parties") from and 
against any Adverse Consequences such Seller Parties may suffer through 
and after the date of the claim for indemnification (including any Adverse 
Consequences the such Seller Parties may suffer after the end of any 
applicable survival period)  resulting from or caused by the Seller 
Indemnification Matter (calculated as set forth in subsection (e) below); 
provided, however, that the Buyer shall not have any obligation to 
indemnify the Sellers hereunder until the Sellers have suffered Adverse 
Consequences by reason of all Seller Indemnification Matters in excess of 
$250,000 in the aggregate, after which point the Sellers shall be entitled 
to indemnification for all such Adverse Consequences in excess of such 
amount; and further provided that the limitation set forth above shall not 
apply to claims for breaches of any covenant set forth in section 5 or 6 
of this Agreement.  

   (d)  Matters Involving Third Parties.

        (i)  If any third party shall notify any Party (the "Indemnified 
        Party") with respect to any matter (a "Third Party Claim") which may 
        give rise to a claim for indemnification against any other Party (the 
        "Indemnifying Party") under this section 9, then the Indemnified 
        Party shall promptly notify each Indemnifying Party thereof in 
        writing within ten (10) days after the Indemnified Party has 
        Knowledge thereof; provided, however, that the Indemnified Party's 
        failure timely to provide such notice shall not bar the Indemnified 
        Party's right to indemnification hereunder if the Indemnified Party 
        can establish that such failure has not materially prejudiced the 
        Indemnifying Party's ability to defend the claim or proceeding.

                                         -38-
<PAGE>

     (ii) Any Indemnifying Party will have the right, at its sole cost and 
   expense, to assume the defense of the Third Party Claim with counsel of 
   his or its choice reasonably satisfactory to the Indemnified Party at any 
   time within ten (10) business days after the Indemnified Party has given 
   notice of the Third Party Claim; provided, however, that the Indemnifying 
   Party shall not have the right to control the defense of any such claim or 
   proceeding unless it has acknowledged in writing its obligation to 
   indemnify the Indemnified Party from liability arising from such claim or 
   proceeding pursuant to  this section 9 (subject to any applicable 
   limitations set forth in subsections 9(b) and 9(c) above), and then, and 
   periodically thereafter, provides the Indemnified Party with reasonably 
   sufficient evidence of the ability of the Indemnifying Party to satisfy 
   its obligations under this section 9 with respect to such Third Party 
   Claim.  In the event that the Indemnifying Party assumes the defense as 
   set forth hereunder, the Indemnifying Party shall conduct the defense of 
   the Third Party Claim with reasonable diligence thereafter.  The 
   Indemnified Party may retain separate co-counsel at its sole cost and 
   expense and participate in the defense of the Third Party Claim; provided 
   that Indemnifying Party's counsel will consult with such co-counsel, but 
   shall remain in sole control of such action.

     (iii) So long as the Indemnifying Party has assumed and is conducting 
   the defense of the Third Party Claim in accordance with section 9(d)(ii) 
   above, (A) the Indemnifying Party will not consent to the entry of any 
   judgment or enter into any settlement with respect to the Third Party 
   Claim without the prior written consent of the Indemnified Party (not to 
   be withheld, conditioned or delayed unreasonably) unless the judgment or 
   proposed settlement involves only the payment of money damages by one or 
   more of the Indemnifying Parties and does not impose any material 
   injunction or other equitable relief upon the Indemnified Party and (B) 
   the Indemnified Party will not consent to the entry of any judgment or 
   enter into any settlement with respect to the Third Party Claim without 
   the prior written consent of the Indemnifying Party (not to be withheld, 
   conditioned or delayed unreasonably). 

     (iv) In the event none of the Indemnifying Parties assumes and conducts 
   the defense of the Third Party Claim in accordance with section 9(d)(ii) 
   above, however, (A) the Indemnified Party may defend against the Third 
   Party Claim in any manner he or it reasonably may deem appropriate; 
   provided that the Indemnified Party shall conduct the defense of the Third 
   Party Claim with reasonable diligence and (B) the Indemnifying Parties 
   will remain responsible for any Adverse Consequences the Indemnified Party 
   may suffer resulting from, arising out of, relating to, in the nature of, 
   or caused by the Third Party Claim to the  extent provided in this section 
   9.  In such event, (1) the Indemnifying Party may retain separate 
   co-counsel at its sole cost and expense and participate in the defense of 
   the Third Party Claim, and the Indemnified Party's counsel will consult 
   with such co-counsel but shall remain in sole control of such proceeding, 
   and (2)  the Indemnified Party will not consent to the entry of any 
   judgment or enter into any settlement with respect to the Third Party 
   Claim without the prior written consent of the Indemnifying Party (not to 
   be withheld, conditioned or delayed unreasonably).

                                         -39-
<PAGE>

   (e)  Determination of Adverse Consequences.  The Parties shall make
appropriate adjustments for tax consequences and insurance coverage and take
into account the time cost of money (using the Applicable Rate as the discount
rate from the later of the Closing Date or  the date of incurrence of such
Adverse Consequences, if not involving a Third Party Claim, or the date of such
Third Party Claim) in determining Adverse Consequences for purposes of this
section 9.  All indemnification payments under this section 9 shall be deemed
adjustments to the Purchase Price.  

   (f)  Exclusive Remedy.  The Buyer and Sellers acknowledge and agree that, 
except (i) as otherwise set forth in this Agreement, (ii) with respect to
actual fraud, intentional misconduct and violations of law, and (iii) for claims
brought for breaches of or default under any Ancillary Agreement, the foregoing
indemnification provisions in this section 9, together with any other
indemnification provisions expressly set forth in this Agreement, shall be the
exclusive remedy of the Buyer and Sellers with respect to matters relating to
the Business and the Assets and the transactions contemplated by this Agreement.
Without limiting the foregoing, Buyer acknowledges that Target's inclusion as a
Party to this Agreement is not intended to, nor shall it have the effect of,
enlarging the liability of the Majority Holder beyond the limitations set forth
in this section 9.

   (g)  Right of Set-Off.  In addition to any other remedies, any Claims
under this section 9 are, at the option of the Buyer, subject to the following
right of set-off.  At the Buyer's election, the principal amount of the Note is
subject to adjustment following the Closing for any aggregate amount finally
determined to be payable by or to Buyer or the Sellers pursuant to this section
9.  Any such adjustment is intended as, and shall be treated by the Parties as,
an adjustment to the Total Consideration.  If the principal amount of the Note
is adjusted pursuant to this subsection (g), such adjustment shall be deemed to
be made effective as of the later of (i) Closing Date, or (ii) the date such
Claim arose, and all interest that may have accrued on the principal amount so
canceled or added shall also be deemed to be retroactively canceled or added,
effective as of such date.  Upon any adjustment of the principal amount of the
Note, Sellers shall, upon request of Buyer, surrender the outstanding Note for a
replacement Note reflecting the adjusted principal amount, and Buyer shall, upon
request of Sellers, execute and deliver to Sellers such replacement Note.  In
the event that a Claim is made, but not finally determined, before the maturity
date of the Note, Buyer shall be entitled to hold back a portion of the
principal payment due on such maturity date equal to the amount of such Claim,
until such Claim is finally determined. In such event, any portion of such
amount so withheld which is finally determined not to be payable with regard to
such Claim shall bear interest at a rate of 9% per annum and shall be payable to
Majority Holder, together with such interest, within ten (10) business days
after the date of such final determination.

10.  Tax Matters.  The following provisions shall govern the allocation of
responsibility as between Buyer and Sellers for certain tax matters:

   (a)  Buyer shall, and shall cause Target to, promptly provide and make
available to the Majority Holder all information he may request for the purpose
of preparing and filing any such return or working on any such audit. 

                                         -40-
<PAGE>

   (b)  Buyer and Sellers shall cooperate fully, as and to the extent
reasonably requested by the other party, in connection with the filing of any
Tax Returns for Target and any audit, litigation or other proceeding with
respect to Taxes.  Such cooperation shall include the retention and (upon the
other party's request) the provision of records and information which are
reasonably relevant to any such audit, litigation or other proceeding and making
employees available on a mutually convenient basis to provide additional
information and explanation of any material provided hereunder. 

   (c)  Buyer and Sellers further agree, upon request, to use all
reasonable efforts, but shall not be required to expend their personal funds, to
obtain any certificate or other document from any governmental authority or any
other Person as may be necessary to mitigate, reduce or eliminate any Tax that
could be imposed on Target (including, but not limited to, with respect to the
transactions contemplated hereby).

   (d)  Buyer and Sellers further agree, upon request, to provide each
other party with all information that either party may be required to report
pursuant to section Section 6043 of the Code and all Treasury Department
Regulations promulgated thereunder.

   (e)  Any transfer, documentary, sales, use, stamp, registration and
other such Taxes and fees (including any penalties and interest) incurred in
connection with this Agreement and the transactions contemplated hereby, shall
be paid half by Sellers and half by Buyer when due, with the Sellers' portion
pro rated in accordance with their respective Target shares on the Closing Date.
Buyer will file all necessary Tax Returns and other documentation with respect
to all such transfer, documentary, sales, use, stamp, registration and other
Taxes and fees, if required by applicable law and shall promptly provide each
Seller with a copy of such Tax Returns and a statement setting forth such
Sellers' share of such Taxes.  

   (f)  Sellers shall have no liability with respect to any Taxes of any
kind with respect to Target or its Assets or operations (i) with respect to all
tax periods beginning after the Closing Date, (ii) with respect to any tax
period of Target beginning before the Closing Date and ending after the Closing
Date, but only with respect to the portion thereof beginning after the Closing
Date, or (iii) with respect to any Pre-Closing Partial Period, but only to the
extent such Taxes were paid prior to Closing or are provided for on the Audited
Net Asset Statement.

   (g)  Sellers and Buyer agree to give prompt notice to each other of any
proposed adjustment to Taxes for periods of Target ending on or prior to the
Closing Date or any Pre-Closing Partial Period.  Sellers and Buyer shall
cooperate with each other in the conduct of any audit or other proceedings
involving Target for such periods and each party may participate at its own
expense.  Seller Representative shall have the right to control the conduct of
any such audit or proceeding for which Seller Representative agrees that any
resulting Tax allocable to any period prior to or including the Closing Date is
covered by the indemnity provided in section 9 of this Agreement, (such audit or
other proceeding, a "Sellers' Contest"), provided that:  (i) Seller
Representative shall keep Buyer informed regarding the progress and substantive
aspect of any Sellers' Contest and (ii) Seller Representative shall not
compromise or settle any Sellers' Contest without Buyer's consent, which consent
may not be unreasonably withheld.  If Seller 

                                         -41-
<PAGE>

Representative chooses to direct a Sellers' Contest, Buyer shall cause powers 
of attorney authorizing Seller Representative to represent Target before the 
relevant taxing authority and such other documents as are reasonably 
necessary for Seller Representative to control the conduct of any Sellers' 
Contest.

11.  Termination.

   (a)  Termination of Agreement. Either Buyer or Majority Holder may
terminate this Agreement as provided below:

        (i)  Buyer and Majority Holder may terminate this Agreement by
   mutual written consent at any time prior to the Closing;

        (ii) Buyer may terminate this Agreement by giving written notice to
   the Seller Representative at any time prior to the Closing (A) in the
   event any of the Sellers has breached any material representation,
   warranty, or covenant contained in this Agreement in any material
   respect, the Buyer has notified the Seller Representative of the breach,
   and the breach has continued without cure for a period of ten (10) days
   after the notice of breach or (B) if the Closing shall not have occurred
   on or before the Termination Date (as defined below), by reason of the
   material failure of any condition precedent under section 7(a) hereof
   (unless the breach of any representation, warranty, or covenant of Buyer
   contained in this Agreement is a material factor therein); or (C) if
   consummation of the transactions contemplated by this Agreement is
   enjoined, prohibited or otherwise restrained by the terms of a final,
   non-appealable order or judgment of a court of competent jurisdiction,
   or (D) if such termination would be authorized pursuant to section 8(b)
   hereof; and

        (iii) Majority Holder may terminate this Agreement by giving
   written notice to the Buyer at any time prior to the Closing (A) in the
   event the Buyer has breached any material representation, warranty, or
   covenant contained in this Agreement in any material respect, Majority
   Holder have notified the Buyer of the breach, and the breach has
   continued without cure for a period of ten (10) days after the notice of
   breach or (B) if the Closing shall not have occurred on or before the
   Termination Date, by reason of the material failure of any condition
   precedent under section 7(b) hereof (unless the  breach of any
   representation, warranty, or covenant of Target or any Seller contained
   in this Agreement is a material factor therein); or (C) if consummation
   of the transactions contemplated by this Agreement is enjoined,
   prohibited or otherwise restrained by the terms of a final,
   non-appealable order or judgment of a court of competent jurisdiction.

        (iv) "Termination Date" means February 17, 1998; provided that
   Buyer may extend the Termination Date, by written notice to Seller
   Representative prior to any termination of this Agreement, to a date not
   later than February 28, 1998 in order to obtain satisfaction of the
   closing conditions set forth in section 7.

                                         -42-
<PAGE>

        (v)  Effect of Termination.  If any Party terminates this Agreement
   pursuant to section 11(a) above, all rights and obligations of the
   Parties hereunder shall terminate without any liability of any Party to
   any other Party (except for any liability of any Party then in breach);
   provided, however, that (i) the confidentiality provisions contained in
   section 5(f) above shall survive termination, and (ii) the provisions of
   Article 12 shall apply.

12. Breach of Agreement.

   (a)  Breach and Opportunity to Cure.  If any party shall breach the
terms of this Agreement or default in the performance of its obligations to be
performed hereunder prior to Closing (a "Pre-Closing Default"), the
nondefaulting party shall have the right to provide the applicable Seller and
Majority Holder, or Buyer, as applicable, with notice specifying in reasonable
detail the nature of such breach or default.  If such breach or default has not
been cured within the time period specified in section 11 above, or by two (2)
business days prior to the Closing Date, if earlier, then the party giving such
notice may (i) terminate this Agreement by giving written notice to the
defaulting party hereunder, (ii) extend the Closing Date for a period not in
excess of ten (10) days, if such default has not been cured by the Closing Date
(but no such extension shall constitute a waiver of such nondefaulting party's
right to terminate as a result of such default), (iii) exercise the remedies
available to such party pursuant to sections 12(b) or 12(c), as applicable,
subject to the right of the other party to contest such action through
appropriate proceedings, and/or (iv) proceed to Closing. 

   (b)  Sellers' Remedies for Failure of Buyer to Close.  Buyer recognizes
that if the transactions contemplated hereby are not consummated as a result of
Buyer's default, Sellers would incur damages, the extent of which is extremely
difficult and impractical to ascertain.  The parties, therefore, agree that if
this Agreement is terminated or the transactions contemplated are otherwise not
consummated  due to the material default of Buyer, Buyer shall pay to the
Sellers its costs and expenses incurred in connection with this Agreement and
the transactions contemplated hereby, up to $50,000, as liquidated damages, as
Sellers' sole and exclusive remedy in full settlement of any damages of such
failure to close.  The parties agree that this sum shall be in lieu of any and
all other relief to which Sellers might otherwise be entitled due to such
failure to close.

   (c)  Buyer's Remedies for Failure of Sellers to Close.  Sellers agree
that the Target Shares represent unique property that cannot be readily obtained
on the open market and that Buyer would be irreparably injured if Sellers'
obligation to sell the Target Shares to Buyer pursuant to this Agreement is not
specifically enforced after default.  Therefore, Buyer shall have the right to
specifically enforce Sellers' obligation to sell the Target Shares to Buyer
pursuant to this Agreement, and Sellers agree to waive the defense in any such
suit that Buyer has an adequate remedy at law and to interpose no opposition,
legal or otherwise, as to the propriety of specific performance as a remedy.  In
addition, Buyer shall be entitled to obtain from Sellers court costs and
reasonable attorneys' fees incurred by Buyer in enforcing its rights under this
subsection (c).  As a condition to seeking specific performance, Buyer shall not
be required to have tendered the Cash Consideration, but shall be ready, willing
and able to do so.  In the event           

                                        -43-
<PAGE>

Buyer elects not to seek specific performance, but instead to terminate this
Agreement as a result of any Pre-Closing Default, then Buyer shall be entitled
to recover its costs and expenses incurred in connection with this Agreement and
the transactions contemplated hereby, up to $50,000 as liquidated damages, as
Buyer's sole and exclusive remedy in full settlement of any damages of such
wrongful failure of Sellers to close. If, upon the default of Sellers in their
obligation to close hereunder, Buyer seeks specific performance and does not
prevail in its attempt to obtain specific performance, then  Buyer shall be
entitled to recover its costs and expenses incurred in connection with this
Agreement and the transactions contemplated hereby, up to $50,000, as liquidated
damages, as Buyer's sole and exclusive remedy in full settlement of any damages
arising from such wrongful failure of Sellers to close.

   (d)  Parties' Remedies for Breach After Closing.  For the breach by any
of the Parties of any covenant or agreement of such Party to be performed after
the Closing, the nondefaulting Party shall have the rights provided for under
section 9 hereof, and all other rights and remedies available for breach of
contract at law and in equity.

13.  Miscellaneous.

   (a)  Press Releases and Public Announcements.  No Party shall issue any
press release or make any public announcement relating to the subject matter of
this Agreement without the prior written approval of the Buyer and the Seller
Representative; provided, however, that any Party may make any public disclosure
it believes in good faith is required by applicable law or any listing or
trading agreement concerning its publicly-traded securities (in which case the
disclosing Party will  advise the other Parties prior to making the disclosure).

   (b)  No Third-Party Beneficiaries.  This Agreement shall not confer any
rights or remedies upon any Person other than the Parties and their respective
successors and permitted assigns; provided that the Buyer Parties and Seller
Parties are intended third party beneficiaries of section 9 hereof.

   (c)  Entire Agreement.  This Agreement (including the documents referred
to herein) constitutes the entire agreement among the Parties and supersedes any
prior understandings, agreements, or representations by or among the Parties,
written or oral, to the extent they relate in any way to the subject matter
hereof.

   (d)  Further Assurances.  Each Party to this Agreement shall execute
such documents and take, or cause Target to take, such further actions as may
reasonably be necessary to implement the provisions of this Agreement.

   (e)  Succession and Assignment.  This Agreement shall be binding upon
and inure to the benefit of the Parties named herein and their respective
successors and permitted assigns. No Party may assign either this Agreement or
any of his or its rights, interests, or obligations hereunder without the prior
written approval of the Buyer and Majority Holder; provided, however, that the
Buyer may (i) assign any or all of its rights and interests hereunder to one or
more of its Affiliates or as collateral to its financing source and (ii)
designate one or more of its 

                                         -44-
<PAGE>

Affiliates to perform its obligations hereunder (in any or all of which cases
the original Buyer nonetheless shall remain fully responsible for the
performance of all obligations hereunder designated as the obligations of
Buyer); and (iii) after the Closing Date, assign its rights and obligations
under this Agreement to any Person in connection with a sale or other
disposition of substantially all of the Business or substantially all of
Target's assets, without the consent of Sellers.

   (f)  Counterparts.  This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original but all of which
together will constitute one and the same instrument.

   (g)  Headings.  The section headings contained in this Agreement are
inserted for convenience only and shall not affect in any way the meaning or
interpretation of this Agreement.

   (h)  Notices.  All notices, requests, demands, claims, and other
communications hereunder will be in writing. Any notice, request, demand, claim,
or other communication hereunder shall be deemed duly given when personally
delivered against a signed receipt or delivered by recognized overnight courier
(and then at the time of delivery or when delivery is refused) or if it is sent
by certified mail, return receipt requested, postage prepaid (and then three
business days after deposited in such mail) and addressed to the intended
recipient as set forth below:

                 If to the Sellers:  c/o Ralph O. Williams
                                     11222 River View Drive
                                     Potomac, Maryland  20854 
                 
                 Copy to:            Alan J. Berkeley, Esq.
                                     Kirkpatrick & Lockhart LLP
                                     1800 Massachusetts Avenue, N.W.
                                     2nd Floor
                                     Washington, D.C. 20036
                 
                                     Trustees of R.O.W. ESOP
                                     c/o Luis Granados, Esq.
                                     McDermott, Will & Emery
                                     600 13th Street, N.W.
                                     Washington, D.C.  20005-3096
                 
                 If to the Buyer:    Federal Data Corporation
                                     4800 Hampden Lane
                                     Bethesda, MD  20816
                                     Attn:  Peter C. Belford

                                         -45-
<PAGE>
                 
                 Copy to:            Victoria J. Perkins, Esq.
                                     Shaw Pittman Potts & Trowbridge
                                     2300 N Street, N.W.
                                     Washington, D.C. 20037

Any Party may send any notice, request, demand, claim, or other communication
hereunder to the intended recipient at the address set forth above using any
other means, but no such notice, request, demand, claim, or other communication
shall be deemed to have been duly given unless and until it actually is received
by the intended recipient. Any Party may change the address to which notices,
requests, demands, claims, and other communications hereunder are to be
delivered by giving the other Parties notice in the manner herein set forth.

   (i)  Governing Law.  This Agreement shall be governed by and construed
in accordance with the domestic laws of the State of Maryland without giving
effect to any choice or conflict of law provision or rule (whether of the State
of Maryland or any other jurisdiction) that would cause the application of the
laws of any jurisdiction other than the State of Maryland.

   (j)  Amendments and Waivers.  No amendment of any provision of this
Agreement shall be valid unless the same shall be in writing and signed by Buyer
and Majority Holder, provided that each Seller must agree to any amendment or
modification of the representations and warranties of the individual Sellers in
section 3(b) hereof.  No waiver by any Party of any default, misrepresentation,
or breach of warranty or covenant hereunder, whether intentional or not, shall
be deemed to extend to any prior or subsequent default, misrepresentation, or
breach of warranty or covenant hereunder or affect in any way any rights arising
by virtue of any prior or subsequent such occurrence.

   (k)  Severability.  Any term or provision of this Agreement that is
invalid or unenforceable in any situation in any jurisdiction shall not affect
the validity or enforceability of the remaining terms and provisions hereof or
the validity or enforceability of the offending term or provision in any other
situation or in any other jurisdiction.

   (l)  Expenses.  Subject to section 2(c) above, except as otherwise set
forth herein, each of the Parties will bear his or its own costs and expenses
(including legal fees and expenses) incurred in connection with this Agreement
and the transactions contemplated hereby.

   (m)  Construction.  The Parties have participated jointly in the
negotiation and drafting of this Agreement. In the event an ambiguity or
question of intent or interpretation arises, this Agreement shall be construed
as if drafted jointly by the Parties and no presumption or burden of proof shall
arise favoring or disfavoring any Party by virtue of the authorship of any of
the provisions of this Agreement. Any reference to any federal, state, local, or
foreign statute or law shall be deemed also to refer to all rules and
regulations promulgated thereunder, unless the context requires otherwise. The
word "including" shall mean including without limitation.

   (n)  Incorporation of Exhibits, Annexes and Schedules.  The Exhibits,
Annexes and Schedules identified in this Agreement are incorporated herein by
reference and made a part hereof.

                                         -46-
<PAGE>

   IN WITNESS WHEREOF, the Parties hereto have executed this Agreement as
of the date first above written.

                                        BUYER: 

                                        Federal Data Corporation


                                        By:   /s/ Peter C. Belford
                                        -------------------------------------
                                        Name:
                                        Title:


                                        SELLERS:

                                              /s/ Ralph O. Williams
                                        -------------------------------------
                                        Name: Ralph O. Williams


                                              /s/ Frederic M. Cullen
                                        -------------------------------------
                                        Name: Frederic M. Cullen


                                        The Trustees of the R.O.W. Sciences ESOP


                                        By:    /s/ Rupert Ambrose
                                        -------------------------------------
                                        Name:  Rupert Ambrose
                                        Title: Trustee



                                        By:    /s/ Stephen Levin
                                        -------------------------------------
                                        Name:  Stephen Levin
                                        Title: Trustee


                                               /s/ John C. Smith
                                        -------------------------------------
                                        Name:  John C. Smith


                                               /s/ Paul H. Tardif
                                        -------------------------------------
                                        Name:  Paul H. Tardif


                                         -47-
<PAGE>

                                        TARGET:

                                        R.O.W. Sciences, Inc.


                                        By:    /s/ Ralph O. Williams
                                        -------------------------------------
                                        Name:
                                        Title:



                                         -48-
<PAGE>


The following exhibits and schedules have been omitted because they are not
deemed to be material to an investment decision.  The Company undertakes to
furnish supplementally a copy of any omitted exhibit or schedule to the
Commission upon request.

Exhibit A - Form of Note
Exhibit B - Financial Statements
Exhibit C - Projections
Exhibit D - List of Required Consents; Form of Consent; Form of Estoppel
Certificates

Disclosure Schedule

Section 3 (b) List of current shareholders
Section 4 (a) State of incorporation; jurisdictions in which Target is qualified
to do business as a  foreign corporation
Section 4 (i) (iii) Cancellation of indebtedness or waiver or release of right
or claim
Section 4 (i) (iv) Cancellation or termination of material Contract or entry
into Contract 
Section 4 (i) (viii) Capital expenditures or execution of lease
Section 4 (i) (x) Revaluation of any of the Assets
Section 4 (i) (xi) Payment or declaration of dividends, distributions
Section 4 (l) Tax matters
Section 4 (m) (ii) Real property leased or subleased
Section 4 (p) (i) (A) Lease, rental or occupancy agreement
Section 4 (p) (i) (B) Contract for furnishing or receipt of goods or services or
delivery of goods or services
Section 4 (p) (i) (C) Government contract to which Target is a party
Section 4 (p) (i) (D) Contract creating or governing a partnership etc.
Section 4 (p) (i) (E) Note, debenture, guarantee, loan, letter of credit or
other agreement
Section 4 (p) (i) (H) Profit sharing, stock option, stock purchase, stock
appreciation, deferred compensation, severance or other material plan
Section 4 (p) (i) (I) Collective bargaining agreement
Section 4 (p) (i) (J) Agreement for employment
Section 4 (s) Insurance
Section 4 (t) Litigation
Section 4 (x) Employee benefits
Section 4 (z) (v) (i) Government contracts
Section 4 (ab) Contract backlog
Consulting agreement between R.O.W. Sciences, Inc. and Ralph O. Williams
Employment agreement between R.O.W. Sciences, Inc. and Mr. John C. Smith
Employment agreement between R.O.W. Sciences, Inc. and Mr. Paul H. Tardif




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