<Page>

                                                                     Exhibit 1.1


                            DigitalNet Holdings, Inc.

                              [_________] Shares(1)
                                  Common Stock
                               ($0.001 par value)

                             Underwriting Agreement


                                                              New York, New York
                                                                          , 2003


Citigroup Global Markets Inc.
388 Greenwich Street
New York, New York 10013

UBS Securities LLC
299 Park Avenue
New York, NY 10071

As Representatives of the several Underwriters,


Ladies and Gentlemen:

              DigitalNet Holdings, Inc., a corporation organized under the
laws of Delaware (the "Company"), proposes to sell to the several underwriters
named in Schedule I hereto (the "Underwriters"), for whom you (the
"Representatives") are acting as representatives, [_________] shares of Common
Stock, $0.001 par value ("Common Stock") of the Company (said shares to be
issued and sold by the Company being hereinafter called the "Underwritten
Securities"). The Company also proposes to grant to the Underwriters an option
to purchase up to [_________] additional shares of Common Stock to cover
over-allotments (the "Option Securities"; the Option Securities, together with
the Underwritten Securities, being hereinafter called the "Securities"). Certain
terms used herein are defined in Section 17 hereof.

              1. REPRESENTATIONS AND WARRANTIES. The Company represents and
warrants to, and agrees with, each Underwriter as set forth below in this
Section 1.

              (a) The Company has prepared and filed with the Commission a
         registration statement (file number 333-107764) on Form S-1, including
         a related preliminary prospectus, for registration under the Act of the
         offering and sale of the Securities. The Company may have filed one or
         more amendments thereto,


- --------------
    (1)  Plus an option to purchase from the Company, up to [_______] additional
Securities to cover over-allotments.

<Page>

                                                                               2


         including a related preliminary prospectus, each of which has
         previously been furnished to you. The Company will next file with the
         Commission either (1) prior to the Effective Date of such registration
         statement, a further amendment to such registration statement
         (including the form of final prospectus) or (2) after the Effective
         Date of such registration statement, a final prospectus in accordance
         with Rules 430A and 424(b). In the case of clause (2), the Company has
         included in such registration statement, as amended at the Effective
         Date, all information (other than Rule 430A Information) required by
         the Act and the rules thereunder to be included in such registration
         statement and the Prospectus. As filed, such amendment and form of
         final prospectus, or such final prospectus, shall contain all Rule 430A
         Information, together with all other such required information, and,
         except to the extent the Representatives shall agree in writing to a
         modification, shall be in all substantive respects in the form
         furnished to you prior to the Execution Time or, to the extent not
         completed at the Execution Time, shall contain only such specific
         additional information and other changes (beyond that contained in the
         latest Preliminary Prospectus) as the Company has advised you, prior to
         the Execution Time, will be included or made therein.

              (b) On the Effective Date, the Registration Statement did or will,
         and when the Prospectus is first filed (if required) in accordance with
         Rule 424(b) and on the Closing Date (as defined herein) and on any date
         on which Option Securities are purchased, if such date is not the
         Closing Date (a "settlement date"), the Prospectus (and any supplements
         thereto) will, comply in all material respects with the applicable
         requirements of the Act and the rules thereunder; on the Effective Date
         and at the Execution Time, the Registration Statement did not or will
         not contain any untrue statement of a material fact or omit to state
         any material fact required to be stated therein or necessary in order
         to make the statements therein not misleading; and, on the Effective
         Date, the Prospectus, if not filed pursuant to Rule 424(b), will not,
         and on the date of any filing pursuant to Rule 424(b) and on the
         Closing Date and any settlement date, the Prospectus (together with any
         supplement thereto) will not, include any untrue statement of a
         material fact or omit to state a material fact necessary in order to
         make the statements therein, in the light of the circumstances under
         which they were made, not misleading; PROVIDED, HOWEVER, that the
         Company makes no representations or warranties as to the information
         contained in or omitted from the Registration Statement, or the
         Prospectus (or any supplement thereto) in reliance upon and in
         conformity with information furnished in writing to the Company by or
         on behalf of any Underwriter through the Representatives specifically
         for inclusion in the Registration Statement or the Prospectus (or any
         supplement thereto).

              (c) DigitalNet Holdings, Inc., DigitalNet, Inc. and DigitalNet
         Government Solutions, LLC conduct all of the Company's business.
         HFS GmbH, a German GmbH (i) is not a party to any indenture, contract,
         lease, mortgage, deed of trust, note agreement, loan agreement or
         other agreement, obligation, condition, covenant or instrument
         necessary to the conduct of the Company's business, (ii) does not
         possess any licenses, certificates, permits or

<Page>

                                                                               3


         other authorizations necessary to the conduct of the Company's
         business and (iii) does not own any Intellectual Property (as defined
         below).

              (d) Each of the Company and its subsidiaries has been duly
         incorporated or organized and is validly existing as a corporation or
         limited liability company and is, other than HFS GmbH, in good standing
         under the laws of the jurisdiction in which it is chartered or
         organized, with full corporate power, or, in the case of DigitalNet
         Government Solutions, LLC, limited liability company power, and
         authority to own or lease, as the case may be, and to operate its
         properties and conduct its business as described in the Prospectus,
         and is duly qualified to do business as a foreign corporation or
         limited liability company and is in good standing under the laws of
         each jurisdiction which requires such qualification, except where the
         failure to be so qualified would not have a Material Adverse Effect.

              (e) All the outstanding shares of capital stock of each subsidiary
         that is a corporation have been duly and validly authorized and issued
         and are fully paid and nonassessable; all outstanding membership
         interests of each subsidiary that is a limited liability company were
         issued in conformity with the Delaware Limited Liability Company Act;
         and, except as otherwise set forth in the Prospectus with respect to
         the pledge of substantially all of the Company's assets as security
         under a credit agreement, all outstanding shares of capital stock or
         membership interests of the subsidiaries are owned by the Company
         either directly or through wholly owned subsidiaries free and clear of
         any perfected security interest or any other security interests,
         claims, liens or encumbrances.

              (f) The Company's authorized and outstanding equity
         capitalization is as set forth in the Prospectus; the capital stock
         of the Company conforms in all material respects to the description
         thereof contained in the Prospectus; the outstanding shares of Common
         Stock have been duly and validly authorized and issued and are fully
         paid and nonassessable; the Securities being sold hereunder by the
         Company have been duly and validly authorized, and, when issued and
         delivered to and paid for by the Underwriters pursuant to this
         Agreement, will be fully paid and nonassessable; the Securities being
         sold hereunder by the Company are duly listed for quotation, and
         admitted and authorized for trading, subject to official notice of
         issuance and evidence of satisfactory distribution, on the Nasdaq
         National Market the certificates for the Securities are in valid and
         sufficient form; the holders of outstanding shares of capital stock of
         the Company are not entitled to preemptive or other rights to subscribe
         for the Securities; and, except as set forth in the Prospectus, no
         options, warrants or other rights to purchase, agreements or other
         obligations to issue, or rights to convert any obligations into or
         exchange any securities for, shares of capital stock of or ownership
         interests in the Company are outstanding.

              (g) There is no franchise, contract or other document of a
         character required to be described in the Registration Statement or
         Prospectus, or to be filed as an exhibit thereto, which is not
         described or filed as required; and the

<Page>

                                                                               4


         statements in the Prospectus under the headings "Risk Factors - We
         Derive Significant Revenues From Contracts Awarded Through a
         Competitive Procurement Process, Which Can Impose Substantial Costs
         Upon Us, and Negatively Impact Our Operating Results," "Risk Factors -
         Federal Government Contracts Contain Provisions Giving Government
         Clients a Variety of Rights That Are Unfavorable to Us, Including the
         Ability to Terminate a Contract at Any Time for Convenience,"
         "Government Contracting and Regulatory Process," "Management's
         Discussion and Analysis of Financial Condition and Results of
         Operations - Senior Credit Facility," "Management's Discussion and
         Analysis of Financial Condition and Results of Operations - Bridge Loan
         Agreement," "Management - Employment Agreements," "Management -
         Severance Plan," "Management - Short-term Incentive Plan," "Management
         - Employee Benefit Plans," "Certain Relationships and Related
         Transactions," "Description of Certain Indebtedness - Current Credit
         Facility," and "Description of Certain Indebtedness - 9% Senior Notes
         due 2010" insofar as such statements summarize legal matters,
         agreements, documents or proceedings discussed therein, fairly and
         accurately summarize in all material respects such legal matters,
         agreements, documents or proceedings.

              (h) This Agreement has been duly authorized, executed and
         delivered by the Company and constitutes a valid and binding obligation
         of the Company enforceable in accordance with its terms.

              (i) The Company is not and, after giving effect to the offering
         and sale of the Securities and the application of the proceeds thereof
         as described in the Prospectus, will not be an "investment company" as
         defined in the Investment Company Act of 1940, as amended.

              (j) No consent, approval, authorization, filing with or order of
         any court or governmental agency or body is required in connection with
         the transactions contemplated herein, except such as have been obtained
         under the Act and such as may be required under the blue sky laws of
         any jurisdiction in connection with the purchase and distribution of
         the Securities by the Underwriters in the manner contemplated herein
         and in the Prospectus.

              (k) Neither the issue and sale of the Securities nor the
         consummation of any other of the transactions herein contemplated nor
         the fulfillment of the terms hereof will conflict with, result in a
         breach or violation or imposition of any lien, charge or encumbrance
         upon any property or assets of the Company or any of its subsidiaries
         pursuant to, (i) the charter or by-laws of the Company or any of its
         subsidiaries, (ii) the terms of any indenture, contract, lease,
         mortgage, deed of trust, note agreement, loan agreement or other
         agreement, obligation, condition, covenant or instrument to which the
         Company or any of its subsidiaries is a party or bound or to which its
         or their property is subject, or (iii) any statute, law, rule,
         regulation, judgment, order or decree applicable to the Company or any
         of its subsidiaries of any court, regulatory body, administrative
         agency, governmental body, arbitrator or other authority having
         jurisdiction over the Company or any of its subsidiaries or any of its
         or their properties, except, in the case of clauses (ii)

<Page>

                                                                               5


         and (iii) above, for such conflicts, breaches, violations or
         impositions that would not have a Material Adverse Effect.

              (l) Other than pursuant to the Amended and Restated Stockholders
         Agreement, dated as of November 26, 2002, by and among DigitalNet
         Holdings, Inc., GTCR Fund VII, L.P., GTCR Co-Invest, L.P., the
         Pearlstein Family, LLC, the Ian Z. Pearlstein 2001 Trust, the Ivanna V.
         Pearlstein 2001 Trust, the J. Sunny Bajaj Trust, the Rueben Bajaj
         Trust, the Bajaj Family Limited Partnership, Ken S. Bajaj, Jack
         Pearlstein, Steven Hanau, Steve Solomon, Barbara Barnes, GetronicsWang
         Co. LLC, and Banc of America Mezzanine Capital LLC, no holders of
         securities of the Company have rights to the registration of such
         securities under the Registration Statement.

              (m) The historical financial statements and schedules of the
         Company and its consolidated subsidiaries and DigitalNet Government
         Solutions LLC, a Delaware limited liability company ("DGS"), included
         in the Prospectus and the Registration Statement present fairly in all
         material respects the financial condition, results of operations and
         cash flows of the Company and DGS as of the dates and for the periods
         indicated, comply as to form in all material respects with the
         applicable accounting requirements of the Act and have been prepared in
         conformity with generally accepted accounting principles applied on a
         consistent basis throughout the periods involved (except as otherwise
         noted therein). The selected financial data set forth under the caption
         "Selected Consolidated Financial Data" in the Prospectus and
         Registration Statement present fairly in all material respects, on the
         basis stated in the Prospectus and the Registration Statement, the
         information included therein. The pro forma consolidated statement of
         operations included in the Prospectus and the Registration Statement
         includes assumptions that provide a reasonable basis for presenting the
         significant effects directly attributable to the transactions and
         events described therein, the related pro forma adjustments give
         appropriate effect to those assumptions, and the pro forma adjustments
         reflect the proper application of those adjustments to the historical
         financial statement amounts in the pro forma consolidated statement of
         operations included in the Prospectus and the Registration Statement.
         The pro forma consolidated statement of operations included in the
         Prospectus and the Registration Statement comply as to form in all
         material respects with the applicable accounting requirements of
         Regulation S-X under the Act and the pro forma adjustments have been
         properly applied to the historical amounts in the compilation of those
         statements.

              (n) No action, suit or proceeding by or before any court or
         governmental agency, authority or body or any arbitrator involving the
         Company or any of its subsidiaries or its or their property is pending
         or, to the knowledge of the Company, threatened that (i) could
         reasonably be expected to have a material adverse effect on the
         performance of this Agreement or the consummation of any of the
         transactions contemplated hereby or (ii) could reasonably be expected
         to have a Material Adverse Effect, except as set forth in or
         contemplated in the Prospectus (exclusive of any supplement thereto).

<Page>

                                                                               6


              (o) Each of the Company and each of its subsidiaries owns or
         leases all such properties as are necessary to the conduct of its
         operations as presently conducted.

              (p) Neither the Company nor any subsidiary is in violation or
         default of (i) any provision of its charter or bylaws, (ii) the terms
         of any indenture, contract, lease, mortgage, deed of trust, note
         agreement, loan agreement or other agreement, obligation, condition,
         covenant or instrument to which it is a party or bound or to which its
         property is subject, or (iii) any statute, law, rule, regulation,
         judgment, order or decree of any court, regulatory body, administrative
         agency, governmental body, arbitrator or other authority having
         jurisdiction over the Company or such subsidiary or any of its
         properties, as applicable, except, in the case of clauses (ii) and
         (iii) above, for such violations or defaults that would not have a
         Material Adverse Effect.

              (q) Ernst & Young LLP, who have certified certain financial
         statements of the Company and its consolidated subsidiaries and DGS and
         its consolidated subsidiaries and delivered their reports with respect
         to the audited consolidated financial statements and schedules included
         in the Prospectus, are independent public accountants with respect to
         the Company and its consolidated subsidiaries and DGS and its
         consolidated subsidiaries within the meaning of the Act and the
         applicable published rules and regulations thereunder.

              (r) PricewaterhouseCoopers LLP, who certified certain financial
         statements of DGS and its consolidated subsidiaries, were, at all times
         during their engagement in connection with the audit of the financial
         statements of DGS and its consolidated subsidiaries for the year ended
         December 31, 1999, independent public accountants within the meaning of
         Rule 101 of the Code of Professional Conduct of the American Institute
         of Certified Public Accountants.

              (s) There are no transfer taxes or other similar fees or charges
         under Federal law or the laws of any state, or any political
         subdivision thereof, required to be paid in connection with the
         execution and delivery of this Agreement or the issuance by the Company
         or sale by the Company of the Securities.

              (t) The Company has filed all foreign, federal, state and local
         tax returns that are required to be filed or has requested extensions
         thereof (except in any case in which the failure so to file would not
         have a Material Adverse Effect, except as set forth in or contemplated
         in the Prospectus (exclusive of any supplement thereto)) and has paid
         all taxes required to be paid by it and any other assessment, fine or
         penalty levied against it, to the extent that any of the foregoing is
         due and payable, except for any such assessment, fine or penalty that
         is currently being contested in good faith or as would not have a
         Material Adverse Effect, except as set forth in or contemplated in the
         Prospectus (exclusive of any supplement thereto).

<Page>

                                                                               7


              (u) No labor problem or dispute with the employees of the Company
         or any of its subsidiaries exists and the Company is not aware of any
         threatened or imminent labor problem or dispute with such employees or
         of any existing or imminent labor disturbance by the employees of any
         of its or its subsidiaries' principal suppliers, contractors or
         customers, that could have a Material Adverse Effect, except as set
         forth in or contemplated in the Prospectus (exclusive of any supplement
         thereto).

              (v) The Company and each of its subsidiaries are insured by
         insurers of recognized financial responsibility against such losses and
         risks and in such amounts as are prudent and customary in the
         businesses in which they are engaged; all policies of insurance and
         fidelity or surety bonds insuring the Company or any of its
         subsidiaries or their respective businesses, assets, employees,
         officers and directors are in full force and effect; the Company and
         its subsidiaries are in compliance with the terms of such policies and
         instruments in all material respects; and there are no claims by the
         Company or any of its subsidiaries under any such policy or instrument
         as to which any insurance company is denying liability or defending
         under a reservation of rights clause; neither the Company nor any such
         subsidiary has been refused any insurance coverage sought or applied
         for; and neither the Company nor any such subsidiary has any reason to
         believe that it will not be able to renew its existing insurance
         coverage as and when such coverage expires or to obtain similar
         coverage from similar insurers as may be necessary to continue its
         business at a cost that would not have a Material Adverse Effect,
         except as set forth in or contemplated in the Prospectus (exclusive of
         any supplement thereto).

              (w) No subsidiary of the Company is currently prohibited, directly
         or indirectly, from paying any dividends to the Company, from making
         any other distribution on such subsidiary's capital stock, from
         repaying to the Company any loans or advances to such subsidiary from
         the Company or from transferring any of such subsidiary's property or
         assets to the Company or any other subsidiary of the Company, except as
         described in or contemplated by the Prospectus.

              (x) The Company and its subsidiaries possess all licenses,
         certificates, permits and other authorizations issued by the
         appropriate federal, state or foreign regulatory authorities necessary
         to conduct their respective businesses, except where the failure to
         possess such licenses, certificates, permits or other authorizations
         would not have a Material Adverse Effect, and neither the Company nor
         any such subsidiary has received any notice of proceedings relating to
         the revocation or modification of any such certificate, authorization
         or permit which, singly or in the aggregate, if the subject of an
         unfavorable decision, ruling or finding, would have a Material Adverse
         Effect, except as set forth in or contemplated in the Prospectus
         (exclusive of any supplement thereto).

              (y) The Company and each of its subsidiaries maintain a system of
         internal accounting controls sufficient to provide reasonable assurance
         that (i) transactions are executed in accordance with management's
         general or specific

<Page>

                                                                               8


         authorizations; (ii) transactions are recorded as necessary to permit
         preparation of financial statements in conformity with generally
         accepted accounting principles and to maintain asset accountability;
         (iii) access to assets is permitted only in accordance with
         management's general or specific authorization; and (iv) the recorded
         accountability for assets is compared with the existing assets at
         reasonable intervals and appropriate action is taken with respect to
         any differences.

              (z) The Company has not taken, directly or indirectly, any action
         designed to or that would constitute or that might reasonably be
         expected to cause or result in, under the Exchange Act or otherwise,
         stabilization or manipulation of the price of any security of the
         Company to facilitate the sale or resale of the Securities.

              (aa) The Company and its subsidiaries are (i) in compliance with
         any and all applicable foreign, federal, state and local laws and
         regulations relating to the protection of human health and safety, the
         environment or hazardous or toxic substances or wastes, pollutants or
         contaminants ("Environmental Laws"), (ii) have received and are in
         compliance with all permits, licenses or other approvals required of
         them under applicable Environmental Laws to conduct their respective
         businesses and (iii) have not received notice of any actual or
         potential liability for the investigation or remediation of any
         disposal or release of hazardous or toxic substances or wastes,
         pollutants or contaminants, except where such non-compliance with
         Environmental Laws, failure to receive required permits, licenses or
         other approvals, or liability would not, individually or in the
         aggregate, have a Material Adverse Effect, except as set forth in or
         contemplated in the Prospectus (exclusive of any supplement thereto).
         Neither the Company nor any of the subsidiaries has been named as a
         "potentially responsible party" under the Comprehensive Environmental
         Response, Compensation, and Liability Act of 1980, as amended.

              (bb) In the ordinary course of its business, the Company
         periodically reviews the effect of Environmental Laws on the business,
         operations and properties of the Company and its subsidiaries, in the
         course of which it identifies and evaluates associated costs and
         liabilities (including, without limitation, any capital or operating
         expenditures required for clean-up, closure of properties or compliance
         with Environmental Laws, or any permit, license or approval, any
         related constraints on operating activities and any potential
         liabilities to third parties). On the basis of such review, the Company
         has reasonably concluded that such associated costs and liabilities
         would not, singly or in the aggregate, have a Material Adverse Effect,
         except as set forth in or contemplated in the Prospectus (exclusive of
         any supplement thereto).

              (cc) Each of the Company and its subsidiaries has fulfilled its
         obligations, if any, under the minimum funding standards of Section 302
         of the United States Employee Retirement Income Security Act of 1974
         ("ERISA") and the regulations and published interpretations thereunder
         with respect to each "plan" (as defined in Section 3(3) of ERISA and
         such regulations and published


<Page>

                                                                               9


         interpretations) in which employees of the Company and its subsidiaries
         are eligible to participate and each such plan is in compliance in all
         material respects with the presently applicable provisions of ERISA and
         the Internal Revenue Code of 1986, as amended (the "Code"), including
         the related regulations and published interpretations, and has been
         administered in all material respects in accordance with its terms.
         Each Company plan which is intended to be qualified under Section
         401(a) of the Code is so qualified; and each trust created under any
         such plan is exempt from tax under Section 501(a) of the Code. The
         Company and its subsidiaries have not incurred any unpaid liability to
         the Pension Benefit Guaranty Corporation (other than for the payment of
         premiums in the ordinary course) or to any such plan under Title IV of
         ERISA. No claim (other than routine claims for benefits) is pending
         with respect to the administration or the investment of any assets of
         any Company plan.

              (dd) The Company and its subsidiaries own, possess, license or
         have other rights to use, on reasonable terms and free and clear of all
         security interests or liens, except as otherwise set forth in the
         Prospectus, all patents, patent applications, trade and service marks,
         trade and service mark registrations, trade names, copyrights,
         licenses, inventions, trade secrets, technology, know-how and other
         intellectual property necessary for the conduct of the Company's
         business as now conducted or as proposed in the Prospectus to be
         conducted (collectively, the "Intellectual Property"), except where the
         failure to own, possess, license or otherwise have a right to use, on
         reasonable terms and free and clear of all security interests or liens,
         any Intellectual Property would not have a Material Adverse Effect.
         Except as otherwise set forth in the Prospectus:

                      (i)    to the Company's knowledge, there are no rights of
                  third parties to any such Intellectual Property, except for
                  licensors' rights, if any;

                      (ii)   to the Company's knowledge, except as could not
                  reasonably be expected to have a Material Adverse Effect, the
                  Company and each of its subsidiaries has performed all
                  material obligations imposed upon them under any material
                  license, material sublicense, material distribution agreement,
                  or other material agreement relating to any Intellectual
                  Property not owned by the Company or any of its subsidiaries
                  and is not, nor to the Company's knowledge is any other party
                  thereto, in material breach of any material terms or default
                  of any material terms thereunder in any respect, nor is there
                  any event known to the Company that with notice or lapse of
                  time or both would constitute a default of any material term
                  thereunder, and, to the Company's knowledge, all such
                  Intellectual Property licenses are valid, enforceable, and in
                  full force and effect and will continue to be so on identical
                  terms immediately following the conclusion of the transaction
                  contemplated hereby except as enforceability may be limited by
                  applicable bankruptcy, insolvency, reorganization, fraudulent
                  conveyance or transfer, moratorium or similar laws affecting
                  the enforcement of creditors' rights;

<Page>

                                                                              10


                      (iii)  to the Company's knowledge, there is no material
                  infringement by third parties of any such Intellectual
                  Property;

                      (iv)   there is no pending or, to the Company's knowledge,
                  threatened action, suit, proceeding or claim by others
                  challenging the Company's rights in or to any such
                  Intellectual Property;

                      (v)    there is no pending or, to the Company's knowledge,
                  threatened action, suit, proceeding or claim by others
                  challenging the validity or scope of any such Intellectual
                  Property;

                      (vi)   there is no pending or, to the Company's knowledge,
                  threatened action, suit, proceeding or claim by others that
                  the Company infringes or otherwise violates any patent,
                  trademark, copyright, trade secret or other proprietary rights
                  of others;

                      (vii)  to the Company's knowledge, there is no U.S. patent
                  or published U.S. patent application which contains claims
                  that dominate or may dominate any Intellectual Property
                  described in the Prospectus as being owned by or licensed to
                  the Company or that interferes with the issued or pending
                  claims of any such Intellectual Property;

                      (viii) there is no prior art of which the Company is aware
                  that may render any U.S. patent held by the Company invalid or
                  any U.S. patent application held by the Company unpatentable
                  which has not been disclosed to the U.S. Patent and Trademark
                  Office;

                      (ix)   to the Company's knowledge, no employee of the
                  Company or any of its subsidiaries is in violation of any
                  employment agreement, patent or invention disclosure
                  agreement, or other agreement setting forth the terms of
                  employment of such employee with the Company or any of its
                  subsidiaries or any prior employee, except as would not
                  reasonably be expected to have a Material Adverse Effect;

                      (x)    to the Company's knowledge, none of the material
                  trade secrets of the Company, wherever located, the value of
                  which is contingent upon maintenance of the confidentiality
                  thereof, has been disclosed to any person other than to
                  employees, representatives, and agents of the Company or any
                  of its subsidiaries or to other persons who have executed
                  appropriate nondisclosure agreements, except as required
                  pursuant to the filing of a patent application by the Company
                  or any of its subsidiaries; and

                      (xi)   all employees of the Company listed as executive
                  officers in the Prospectus have executed and delivered
                  invention agreements with the Company or the applicable
                  subsidiary and are obligated under the terms thereof to assign
                  all inventions made by them during the course of employment to
                  the Company or to the applicable subsidiary, and no such

<Page>

                                                                              11


                  employee of the Company or any of its subsidiaries has
                  excluded works or inventions made prior to his or her
                  employment with or work for the Company or any of its
                  subsidiaries from his or her assignment of inventions pursuant
                  to such proprietary invention agreements.

              (ee) The Company has calculated its backlog as of December 31,
         2001 and 2002 in compliance with the requirements of Item 101 of
         Regulation S-K under the Act. As of the date hereof, the Company is not
         aware of any facts or circumstances, including without limitation, any
         notice of any program cancelation or change in program schedule,
         contract reduction, modification or early termination, that could
         reasonably be expected to have a material adverse effect on its ability
         to recognize revenue during the year ended December 31, 2003 from
         approximately 30% of its total backlog as of December 31, 2002.

              (ff) Neither the Company nor any of its subsidiaries, nor, to the
         best of the Company's knowledge, any employee or agent of the Company
         or any subsidiary, has made any contribution or other payment to any
         official of, or candidate for, any federal, state or foreign office in
         violation of any law or of the character required to be disclosed in
         the Registration Statement and the Prospectus.

              (gg) There is no outstanding allegation of improper or illegal
         activities arising from any government audit or non-audit review,
         including without limitation, by the Defense Contract Audit Agency, of
         the Company or work performed by the Company or any of its subsidiaries
         or subcontractors that could reasonably be expected to have a Material
         Adverse Effect. There are no pending civil or criminal penalties or
         administrative sanctions arising from a government audit or non-audit
         review of the Company or work performed by the Company or any of its
         subsidiaries or subcontractors, including, but not limited to,
         termination of contracts, forfeiture of profits, suspension of
         payments, fines, or suspension or debarment from doing business with
         any U.S. federal government agency. As of the date hereof, the Company
         does not reasonably believe that it will be required to make any
         adjustments to the financial statements included in the Registration
         Statement and the Prospectus as a result of any pending government
         audit or non-audit review of the Company.

              Any certificate signed by any officer of the Company and delivered
to the Representatives or counsel for the Underwriters in connection with the
offering of the Securities shall be deemed a representation and warranty by the
Company, as to matters covered thereby, to each Underwriter.

              2. PURCHASE AND SALE. (a) Subject to the terms and conditions and
in reliance upon the representations and warranties herein set forth, the
Company agrees to sell to each Underwriter, and each Underwriter agrees,
severally and not jointly, to purchase from the Company, at a purchase price of
$        per share, the amount of the Underwritten Securities set forth opposite
such Underwriter's name in Schedule I hereto.

<Page>

                                                                              12


              (b) Subject to the terms and conditions and in reliance upon the
representations and warranties herein set forth, the Company hereby grants an
option to the several Underwriters to purchase, severally and not jointly, up to
[_________] Option Securities at the same purchase price per share as the
Underwriters shall pay for the Underwritten Securities. Said option may be
exercised only to cover over-allotments in the sale of the Underwritten
Securities by the Underwriters. Said option may be exercised in whole or in part
at any time on or before the 30th day after the date of the Prospectus upon
written or telegraphic notice by the Representatives to the Company setting
forth the number of shares of the Option Securities as to which the several
Underwriters are exercising the option and the settlement date. The number of
Option Securities to be purchased by each Underwriter shall be the same
percentage of the total number of shares of the Option Securities to be
purchased by the several Underwriters as such Underwriter is purchasing of the
Underwritten Securities, subject to such adjustments as you in your absolute
discretion shall make to eliminate any fractional shares.

              3. DELIVERY AND PAYMENT. Delivery of and payment for the
Underwritten Securities and the Option Securities (if the option provided for in
Section 2(b) hereof shall have been exercised on or before the third Business
Day prior to the Closing Date) shall be made at 10:00 AM, New York City time, on
    , 2003, or at such time on such later date not more than three Business Days
after the foregoing date as the Representatives shall designate, which date and
time may be postponed by agreement between the Representatives and the Company
or as provided in Section 9 hereof (such date and time of delivery and payment
for the Securities being herein called the "Closing Date"). Delivery of the
Securities shall be made to the Representatives for the respective accounts of
the several Underwriters against payment by the several Underwriters through the
Representatives of the purchase price thereof to or upon the order of the
Company by wire transfer payable in same-day funds to an account specified by
the Company. Delivery of the Underwritten Securities and the Option Securities
shall be made through the facilities of The Depository Trust Company unless the
Representatives shall otherwise instruct.

              If the option provided for in Section 2(b) hereof is exercised
after the third Business Day prior to the Closing Date, the Company will deliver
the Option Securities (at the expense of the Company) to the Representatives, at
388 Greenwich Street, New York, New York, on the date specified by the
Representatives (which shall be within three Business Days after exercise of
said option) for the respective accounts of the several Underwriters, against
payment by the several Underwriters through the Representatives of the purchase
price thereof to or upon the order of the Company by wire transfer payable in
same-day funds to an account specified by the Company. If settlement for the
Option Securities occurs after the Closing Date, the Company will deliver to the
Representatives on the settlement date for the Option Securities, and the
obligation of the Underwriters to purchase the Option Securities shall be
conditioned upon receipt of, supplemental opinions, certificates and letters
confirming as of such date the opinions, certificates and letters delivered on
the Closing Date pursuant to Section 6 hereof.

<Page>

                                                                              13


              4. OFFERING BY UNDERWRITERS.  It is understood that the several
Underwriters propose to offer the Securities for sale to the public as set forth
in the Prospectus.

              5. AGREEMENTS.  The Company agrees with the several Underwriters
that:

              (a) The Company will use its best efforts to cause the
         Registration Statement, if not effective at the Execution Time, and any
         amendment thereof, to become effective. Prior to the termination of the
         offering of the Securities, the Company will not file any amendment of
         the Registration Statement or supplement to the Prospectus or any Rule
         462(b) Registration Statement unless the Company has furnished you a
         copy for your review prior to filing and will not file any such
         proposed amendment or supplement to which you reasonably object.
         Subject to the foregoing sentence, if the Registration Statement has
         become or becomes effective pursuant to Rule 430A, or filing of the
         Prospectus is otherwise required under Rule 424(b), the Company will
         cause the Prospectus, properly completed, and any supplement thereto to
         be filed with the Commission pursuant to the applicable paragraph of
         Rule 424(b) within the time period prescribed and will provide evidence
         satisfactory to the Representatives of such timely filing. The Company
         will promptly advise the Representatives (1) when the Registration
         Statement, if not effective at the Execution Time, shall have become
         effective, (2) when the Prospectus, and any supplement thereto, shall
         have been filed (if required) with the Commission pursuant to Rule
         424(b) or when any Rule 462(b) Registration Statement shall have been
         filed with the Commission, (3) when, prior to termination of the
         offering of the Securities, any amendment to the Registration Statement
         shall have been filed or become effective, (4) of any request by the
         Commission or its staff for any amendment of the Registration
         Statement, or any Rule 462(b) Registration Statement, or for any
         supplement to the Prospectus or for any additional information, (5) of
         the issuance by the Commission of any stop order suspending the
         effectiveness of the Registration Statement or the institution or
         threatening of any proceeding for that purpose and (6) of the receipt
         by the Company of any notification with respect to the suspension of
         the qualification of the Securities for sale in any jurisdiction or the
         institution or threatening of any proceeding for such purpose. The
         Company will use its best efforts to prevent the issuance of any such
         stop order or the suspension of any such qualification and, if issued,
         to obtain as soon as possible the withdrawal thereof.

              (b) If, at any time when a prospectus relating to the Securities
         is required to be delivered under the Act, any event occurs as a result
         of which the Prospectus as then supplemented would include any untrue
         statement of a material fact or omit to state any material fact
         necessary to make the statements therein in the light of the
         circumstances under which they were made not misleading, or if it shall
         be necessary to amend the Registration Statement or supplement the
         Prospectus to comply with the Act or the rules thereunder, the Company
         promptly will (1) notify the Representatives of any such event, (2)
         prepare and file with the Commission, subject to the second sentence of
         paragraph (a) of this Section 5, an amendment or supplement which will
         correct such statement or omission or effect

<Page>

                                                                              14


         such compliance; and (3) supply any supplemented Prospectus to you in
         such quantities as you may reasonably request.

              (c) As soon as practicable, the Company will make generally
         available to its security holders and to the Representatives an
         earnings statement or statements of the Company and its subsidiaries
         which will satisfy the provisions of Section 11(a) of the Act and Rule
         158 under the Act.

              (d) The Company will furnish to the Representatives and counsel
         for the Underwriters signed copies of the Registration Statement
         (including exhibits thereto) and to each other Underwriter a copy of
         the Registration Statement (without exhibits thereto) and, so long as
         delivery of a prospectus by an Underwriter or dealer may be required by
         the Act, as many copies of each Preliminary Prospectus and the
         Prospectus and any supplement thereto as the Representatives may
         reasonably request.

              (e) The Company will arrange, if necessary, for the qualification
         of the Securities for sale under the laws of such jurisdictions as the
         Representatives may designate and will maintain such qualifications in
         effect so long as required for the distribution of the Securities;
         provided that in no event shall the Company be obligated to qualify to
         do business in any jurisdiction where it is not now so qualified or to
         take any action that would subject it to service of process in suits,
         other than those arising out of the offering or sale of the Securities,
         in any jurisdiction where it is not now so subject.

              (f) The Company will not, without the prior written consent of
         Citigroup Global Markets Inc. and UBS Securities LLC, offer, sell,
         contract to sell, pledge, or otherwise dispose of, (or enter into any
         transaction which is designed to, or might reasonably be expected to,
         result in the disposition (whether by actual disposition or effective
         economic disposition due to cash settlement or otherwise) by the
         Company or any affiliate of the Company or any person in privity with
         the Company or any affiliate of the Company) directly or indirectly,
         including the filing (or participation in the filing) of a registration
         statement with the Commission in respect of, or establish or increase a
         put equivalent position or liquidate or decrease a call equivalent
         position within the meaning of Section 16 of the Exchange Act, any
         other  shares of Common Stock or any securities convertible into, or
         exercisable, or exchangeable for, shares of Common Stock; or publicly
         announce an intention to effect any such transaction, for a period of
         180 days after the date of the Underwriting Agreement, PROVIDED,
         HOWEVER, that the Company may (i) issue and sell Common Stock or
         securities exercisable for Common Stock pursuant to any employee stock
         option plan, stock ownership plan or dividend reinvestment plan of the
         Company in effect at the Execution Time, (ii) issue Common Stock
         issuable upon the conversion of securities or the exercise of warrants
         outstanding at the Execution Time, and (iii) issue Common Stock or
         securities convertible into, or exercisable, or exchangeable for,
         shares of Common Stock in exchange for equity or assets of another
         entity in connection with a merger, acquisition or strategic
         investment, PROVIDED THAT (a) such acquisition was

<Page>

                                                                              15


         not preceded by an unsolicited tender offer for such equity interests
         by, or proxy contest initiated by, the Company or any subsidiary, (b)
         such entity shall be a going concern, (c) the aggregate fair value of
         the stock portion of the consideration for all such acquisitions shall
         not exceed $50,000,000, and (d) prior to any such issuance the
         recipient of such securities shall have agreed with Citigroup Global
         Markets Inc. and UBS Securities LLC to be bound by this provision for
         the remainder of the 180-day period.

              (g) The Company will not take, directly or indirectly, any action
         designed to or that would constitute or that might reasonably be
         expected to cause or result in, under the Exchange Act or otherwise,
         stabilization or manipulation of the price of any security of the
         Company to facilitate the sale or resale of the Securities.

              (h) The Company agrees to pay the costs and expenses relating to
         the following matters: (i) the preparation, printing or reproduction
         and filing with the Commission of the Registration Statement (including
         financial statements and exhibits thereto), each Preliminary
         Prospectus, the Prospectus, and each amendment or supplement to any of
         them; (ii) the printing (or reproduction) and delivery (including
         postage, air freight charges and charges for counting and packaging) of
         such copies of the Registration Statement, each Preliminary Prospectus,
         the Prospectus, and all amendments or supplements to any of them, as
         may, in each case, be reasonably requested for use in connection with
         the offering and sale of the Securities; (iii) the preparation,
         printing, authentication, issuance and delivery of certificates for the
         Securities, including any stamp or transfer taxes in connection with
         the original issuance and sale of the Securities; (iv) the printing (or
         reproduction) and delivery of this Agreement, any blue sky memorandum
         and all other agreements or documents printed (or reproduced) and
         delivered in connection with the offering of the Securities; (v) the
         registration of the Securities under the Exchange Act and the listing
         of the Securities on the New York Stock Exchange; (vi) any registration
         or qualification of the Securities for offer and sale under the
         securities or blue sky laws of the several states (including filing
         fees and the reasonable fees and expenses of counsel for the
         Underwriters relating to such registration and qualification); (vii)
         any filings required to be made with the National Association of
         Securities Dealers, Inc. (including filing fees and the reasonable fees
         and expenses of counsel for the Underwriters relating to such filings);
         (viii) the transportation and other expenses incurred by or on behalf
         of Company representatives in connection with presentations to
         prospective purchasers of the Securities; (ix) the fees and expenses of
         the Company's accountants and the fees and expenses of counsel
         (including local and special counsel) for the Company; and (x) all
         other costs and expenses incident to the performance by the Company of
         its obligations hereunder.

              6. CONDITIONS TO THE OBLIGATIONS OF THE UNDERWRITERS. The
obligations of the Underwriters to purchase the Underwritten Securities and the
Option Securities, as the case may be, shall be subject to the accuracy of the
representations and warranties on the part of the Company contained herein as of
the Execution Time, the Closing Date and any settlement date pursuant to
Section 3 hereof, to the accuracy of the statements of the

<Page>

                                                                              16


Company made in any certificates pursuant to the provisions hereof, to the
performance by the Company of its obligations hereunder and to the following
additional conditions:

              (a) If the Registration Statement has not become effective prior
         to the Execution Time, unless the Representatives agree in writing to a
         later time, the Registration Statement will become effective not later
         than (i) 6:00 PM New York City time on the date of determination of the
         public offering price, if such determination occurred at or prior to
         3:00 PM New York City time on such date or (ii) 9:30 AM on the Business
         Day following the day on which the public offering price was
         determined, if such determination occurred after 3:00 PM New York City
         time on such date; if filing of the Prospectus, or any supplement
         thereto, is required pursuant to Rule 424(b), the Prospectus, and any
         such supplement, will be filed in the manner and within the time period
         required by Rule 424(b); and no stop order suspending the effectiveness
         of the Registration Statement shall have been issued and no proceedings
         for that purpose shall have been instituted or threatened.

              (b) The Company shall have requested and caused Fried, Frank,
         Harris, Shriver & Jacobson, counsel for the Company, to have furnished
         to the Representatives their opinion, dated the Closing Date and
         addressed to the Representatives, to the effect that:

                      (i)    each of the Company and its significant
                  subsidiaries as defined by Rule 1-02 of Regulation S-X (the
                  "Significant Subsidiaries") is validly existing as a
                  corporation or limited liability company in good standing
                  under the laws of the jurisdiction in which it is chartered or
                  organized, with full corporate power, or, in the case of DGS,
                  limited liability company power, and authority to own or
                  lease, as the case may be, and to operate its properties and
                  conduct its business as described in the Prospectus, and is
                  duly qualified to do business as a foreign corporation or
                  limited liability company and is in good standing under the
                  laws of each jurisdiction listed on Schedule II attached
                  hereto;

                      (ii)   all the outstanding shares of capital stock of the
                  Company and DigitalNet, Inc. have been duly and validly
                  authorized and issued and are fully paid and nonassessable;
                  all outstanding membership interest of DGS were issued in
                  conformity with the Delaware Limited Liability Company Act;
                  and all outstanding shares of capital stock or membership
                  interests of each subsidiary listed on Schedule III are owned
                  of record by the Company or its wholly-owned subsidiary;

                      (iii)  the Company's authorized equity capitalization is
                  as set forth in the Prospectus; the capital stock of the
                  Company conforms in all material respects to the description
                  thereof contained in the Prospectus under the caption
                  "Description of Capital Stock"; the Securities being sold
                  hereunder by the Company have been duly and validly
                  authorized, and, when issued and delivered to and paid for by
                  the Underwriters pursuant to

<Page>

                                                                              17


                  this Agreement, will be fully paid and nonassessable; the
                  Securities being sold hereunder by the Company are admitted
                  and authorized for trading, subject to official notice of
                  issuance and evidence of satisfactory distribution, on the New
                  York Stock Exchange; the certificates for the Securities,
                  assuming they are in the form filed with the Commission, are
                  in due and proper form under the Delaware General Corporation
                  Law; and the holders of outstanding shares of capital stock of
                  the Company are not entitled to statutory preemptive or, to
                  such counsel's knowledge, other similar contractual rights to
                  subscribe for the Securities;

                      (iv)   to the knowledge of such counsel and other than as
                  set forth in the Prospectus, (a) there are no legal or
                  governmental proceedings pending to which the Company or any
                  of its subsidiaries is a party or of which any property of the
                  Company or any of its subsidiaries is the subject which are
                  required to be disclosed pursuant to Item 103 of Regulation
                  S-K, and (b) no such proceedings are threatened or
                  contemplated against the Company or any of its subsidiaries;
                  and, to the knowledge of such counsel, there is no franchise,
                  contract or other document of a character required to be
                  described in the Registration Statement or Prospectus, or to
                  be filed as an exhibit thereto, which is not described or
                  filed as required; and the statements in the Prospectus under
                  the heading "Government Contracting and Regulatory Process,"
                  insofar as such statements summarize, in general terms, the
                  legal matters discussed therein, are, in all material
                  respects, fair summaries of such legal matters;

                      (v)    the Registration Statement has become effective
                  under the Act; any required filing of the Prospectus pursuant
                  to Rule 424(b) has been made in the manner and within the time
                  period required by Rule 424(b); to the knowledge of such
                  counsel, no stop order suspending the effectiveness of the
                  Registration Statement has been issued and no proceedings for
                  that purpose have been instituted or threatened;

                      (vi)   the Registration Statement and the Prospectus
                  (other than the financial statements, including the notes and
                  schedules thereto, and other financial information derived
                  therefrom, as to which such counsel need express no opinion)
                  appeared on their face to be responsive in all material
                  respects to the requirements of the Act and the rules
                  thereunder;

                      (vii)  this Agreement has been duly authorized, executed
                  and delivered by the Company;

                      (viii) the Company is not and, after giving effect to the
                  offering and sale of the Securities and the application of the
                  proceeds thereof as described in the Prospectus, will not be,
                  an "investment company" as defined in the Investment Company
                  Act of 1940, as amended;

<Page>

                                                                              18


                       (ix)  no consent, approval, authorization, filing with or
                  order of any court or governmental agency or body is required
                  in connection with the transactions contemplated herein,
                  except such as have been obtained under the Act or the
                  Securities Exchange Act of 1934, as amended, or any order,
                  rule or regulation thereunder, and such as may be required by
                  the NASD or under the state securities laws of any
                  jurisdiction in connection with the purchase and distribution
                  of the Securities by the Underwriters in the manner
                  contemplated in this Agreement and in the Prospectus; and

                      (x)    neither the issue and sale of the Securities, nor
                  the consummation of any other of the transactions herein
                  contemplated nor the fulfillment of the terms hereof will
                  conflict with, result in a breach or violation of or
                  imposition of any lien, charge or encumbrance upon any
                  property or assets of the Company or its Significant
                  Subsidiaries pursuant to, (i) the charter or by-laws of the
                  Company or its Significant Subsidiaries, (ii) the terms of any
                  agreement or other instrument to which the Company or its
                  subsidiaries is a party or bound or to which it or its
                  property is subject that has been filed as an exhibit to the
                  Registration Statement, PROVIDED, HOWEVER, that such counsel
                  need express no opinion with respect to any violation,
                  conflict, breach or default that arises under or is based upon
                  any covenant of a financial or numerical nature or which
                  requires arithmetic computation, (iii) any statute, law, rule,
                  regulation of any governmental agency or authority of the
                  United States or the State of New York or the Delaware General
                  Corporation Law or the Delaware Limited Liability Company Act
                  (except federal and state securities laws) or (iv) to the
                  knowledge of such counsel, any judgment, order or decree
                  applicable to the Company or its subsidiaries of any court,
                  regulatory body, administrative agency, governmental body,
                  arbitrator or other authority having jurisdiction over the
                  Company or its subsidiaries or any of its or their properties.

              In addition, such counsel shall state that, in the course of the
preparation by the Company of the Registration Statement and the Prospectus,
they have participated in conferences with certain of the officers and
representatives of, and the independent public accountants for, the Company, at
which the Registration Statement and the Prospectus were discussed. Such counsel
shall also state that between the date of effectiveness of the Registration
Statement and the time of delivery of this letter, they have held additional
conferences with certain of the officers and representatives of, and the
independent public accountants for, the Company, at which the contents of the
Prospectus were discussed to a limited extent. Such counsel shall state that
given the limitations inherent in the independent verification of factual
matters and the character of determinations involved in the registration
process, (except as expressly set forth in their opinion) they are not passing
upon or assuming any responsibility for the accuracy, completeness or fairness
of the statements contained in the Registration Statement or the Prospectus and
have made no independent check or verification thereof. Such counsel shall also
state that subject to the foregoing and on the basis of the


<Page>

                                                                              19


information gained in the performance of the services referred to above,
including information obtained from officers and other representatives of, and
the independent public accountants for, the Company, no facts have come to such
counsel's attention that have caused them to believe that the Registration
Statement and the Prospectus included therein, as of its effective date,
contained any untrue statement of a material fact or omitted to state a material
fact required to be stated therein or necessary in order to make the statements
therein not misleading or that the Prospectus, as of its date, contained any
untrue statement of a material fact or omitted to state a material fact
necessary in order to make the statements therein, in light of the circumstances
under which they were made, not misleading. Also, such counsel shall state,
subject to the foregoing, no facts have come to their attention in the course of
proceedings described in the second sentence of this paragraph that cause them
to believe that the Prospectus, as of the date and time of delivery of such
letter, contains any untrue statement of a material fact or omits to state a
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances in which they were made, not
misleading. Such counsel shall also state that in each case, however, they
expresses no view or belief with respect to financial statements, notes or
schedules thereto or other financial or statistical data included in or omitted
from the Registration Statement or Prospectus.

              In rendering such opinion, such counsel may rely as to matters
of fact, to the extent they deem proper, on certificates of responsible officers
of the Company and public officials. References to the Prospectus in this
paragraph (b) include any supplements thereto at the Closing Date.

              (c) The Representatives shall have received from Cravath, Swaine
         & Moore LLP, counsel for the Underwriters, such opinion or opinions,
         dated the Closing Date and addressed to the Representatives, with
         respect to the issuance and sale of the Securities, the Registration
         Statement, the Prospectus (together with any supplement thereto) and
         other related matters as the Representatives may reasonably require,
         and the Company shall have furnished to such counsel such documents as
         they request for the purpose of enabling them to pass upon such
         matters.

              (d) The Company shall have furnished to the Representatives a
         certificate of the Company, signed by the Chairman of the Board or the
         President and the principal financial or accounting officer of the
         Company, dated the Closing Date, to the effect that the signers of such
         certificate have carefully examined the Registration Statement, the
         Prospectus, any supplements to the Prospectus and this Agreement and
         that:

                      (i)    the representations and warranties of the Company
                  in this Agreement are true and correct on and as of the
                  Closing Date with the same effect as if made on the Closing
                  Date and the Company has complied with all the agreements and
                  satisfied all the conditions on its part to be performed or
                  satisfied at or prior to the Closing Date;


<Page>

                                                                              20


                      (ii)   no stop order suspending the effectiveness of the
                  Registration Statement has been issued and no proceedings for
                  that purpose have been instituted or, to the Company's
                  knowledge, threatened; and

                      (iii)  since the date of the most recent financial
                  statements included in the Prospectus (exclusive of any
                  supplement thereto), there has been no material adverse effect
                  on the condition (financial or otherwise), prospects,
                  earnings, business or properties of the Company and its
                  subsidiaries, taken as a whole, whether or not arising from
                  transactions in the ordinary course of business, except as set
                  forth in or contemplated in the Prospectus (exclusive of any
                  supplement thereto).

              (e) The Company shall have requested and caused Ernst & Young LLP
         to have furnished to the Representatives letters, at the Execution Time
         and at the Closing Date, dated respectively as of the Execution Time
         and as of the Closing Date, in form and substance satisfactory to the
         Representatives, confirming (i) that they are independent accountants
         within the meaning of Rule 101 of the American Institute of
         Certified Public Accountants Code of Professional Conduct and its
         interpretations and rulings and (ii) that they have performed a review
         of the unaudited interim financial information of the Company for the
         nine-month period ended September 30, 2002 in accordance with Statement
         on Auditing Standards No. 100 ("SAS 100"), and the nine-month period
         ended September 30, 2003, in accordance with SAS 100 and a review of
         the unaudited interim financial information of DGS for the nine-month
         period ended September 30, 2002 in accordance with SAS 100, and
         stating in effect that:

                      (i)    in their opinion the audited financial statements
                  included in the Registration Statement and the Prospectus and
                  reported on by them comply as to form in all material respects
                  with the applicable accounting requirements of the Act and the
                  related rules and regulations adopted by the Commission;

                      (ii)   on the basis of a reading of the latest unaudited
                  financial statements made available by the Company and its
                  subsidiaries; their limited review, in accordance with
                  standards established under SAS 100, of DGS' and the Company's
                  unaudited interim financial information for the nine-month
                  period ended September 30, 2002 and in accordance with
                  standards established under SAS 100, of the Company's
                  unaudited interim financial information for the nine-month
                  period ended September 30, 2003, included in the Registration
                  Statement and the Prospectus, carrying out certain specified
                  procedures (but not an examination in accordance with
                  generally accepted auditing standards) which would not
                  necessarily reveal matters of significance with respect to
                  the comments set forth in such letter; a reading of the
                  minutes of the meetings of the stockholders, directors and
                  audit and compensation committees of the Company and its
                  subsidiaries; and inquiries of certain officials of the
                  Company who have responsibility for financial and accounting
                  matters of the Company and its subsidiaries as to transactions
                  and events subsequent to December 31, 2002, nothing came to
                  their attention which caused them to believe that:

                              (1) any unaudited financial statements included in
                           the Registration Statement and the Prospectus do not
                           comply as to form in all material respects with
                           applicable accounting requirements of the Act; and
                           said unaudited financial statements are not in
                           conformity with generally accepted accounting
                           principles applied on a basis substantially
                           consistent with that of the audited financial
                           statements included in the Registration Statement and
                           the Prospectus;

<Page>

                                                                              21


                              (2) with respect to the period subsequent to
                           September 30, 2003, there were any changes, at a
                           specified date not more than five days prior to the
                           date of the letter, in the long-term debt or other
                           liabilities of the Company and its subsidiaries or
                           the capital stock of the Company or decreases in the
                           stockholders' equity or total assets of the Company
                           as compared with the amounts shown on the September
                           30, 2003, consolidated balance sheet included in the
                           Registration Statement and the Prospectus, or for the
                           period from October 1, 2003, to such specified date
                           there were any decreases, as compared with the
                           results of DGS and its subsidiaries for the
                           corresponding period in the prior years, in revenues,
                           income from operations or net income of the Company
                           and its subsidiaries, except in all instances for
                           changes or decreases set forth in such letter, in
                           which case the letter shall be accompanied by an
                           explanation by the Company as to the significance
                           thereof unless said explanation is not deemed
                           necessary by the Representatives;

                              (3) the information included in the Prospectus and
                           Registration Statement in response to Regulation S-K,
                           Item 301 (Selected Financial Data), Item 302
                           (Supplementary Financial Information) and Item 402
                           (Executive Compensation) is not in conformity with
                           the applicable disclosure requirements of Regulation
                           S-K;

                              (4) [the unaudited income statement data included
                           in the Final Prospectus under the heading
                           "[Prospectus Summary - Recent Developments]" do not
                           agree with the amounts set forth in the unaudited
                           financial statements for the same periods or were
                           not determined on a basis substantially consistent
                           with that of the corresponding amounts in the audited
                           financial statements included in the Registration
                           Statement and the Final Prospectus]; and

                      (iii)  they have performed certain other specified
                  procedures as a result of which they determined that certain
                  information of an accounting, financial or statistical nature
                  (which is limited to accounting, financial or statistical
                  information derived from the general accounting records of the
                  Company and its subsidiaries or DGS and its subsidiaries) set
                  forth in the Registration Statement and the Prospectus, agrees
                  with the accounting records of the Company and its
                  subsidiaries or DGS and its subsidiaries, excluding any
                  questions of legal interpretation; and

                      (iv)   on the basis of a reading of the unaudited pro
                  forma consolidated statement of operations included in the
                  Registration Statement and the Prospectus (the "pro forma
                  statement of operations"); carrying out certain specified
                  procedures; inquiries of certain officials of

<Page>

                                                                              22


                  the Company who have responsibility for financial and
                  accounting matters; and proving the arithmetic accuracy of the
                  application of the pro forma adjustments to the historical
                  amounts in the pro forma statement of operations, nothing came
                  to their attention which caused them to believe that the pro
                  forma statement of operations (A) are not stated on a basis
                  substantially consistent with that of the audited financial
                  statements of the Company included in the Prospectus, (B) do
                  not comply as to form in all material respects with the
                  applicable accounting requirements of Rule 11-02 of Regulation
                  S-X or (C) that the pro forma adjustments have not been
                  properly applied to the historical amounts in the compilation
                  of such statements. References to the Prospectus in this
                  paragraph include any supplement thereto at the date of the
                  letter.

              (f) Subsequent to the Execution Time or, if earlier, the dates as
         of which information is given in the Registration Statement (exclusive
         of any amendment thereof) and the Prospectus (exclusive of any
         supplement thereto), there shall not have been (i) any change or
         decrease specified in the letter or letters referred to in paragraph
         (e) of this Section 6 or (ii) any change, or any development involving
         a prospective change, in or affecting the condition (financial or
         otherwise), earnings, business or properties of the Company and its
         subsidiaries taken as a whole, whether or not arising from transactions
         in the ordinary course of business, except as set forth in or
         contemplated in the Prospectus (exclusive of any supplement thereto)
         the effect of which, in any case referred to in clause (i) or (ii)
         above, is, in the sole judgment of the Representatives, so material and
         adverse as to make it impractical or inadvisable to proceed with the
         offering or delivery of the Securities as contemplated by the
         Registration Statement (exclusive of any amendment thereof) and the
         Prospectus (exclusive of any supplement thereto).

              (g) Subsequent to the Execution Time, there shall not have been
         any decrease in the rating of any of the Company's debt securities by
         any "nationally recognized statistical rating organization" (as defined
         for purposes of Rule 436(g) under the Act) or any notice given of any
         intended or potential decrease in any such rating or of a possible
         change in any such rating that does not indicate the direction of the
         possible change.

              (h) The Securities shall have been listed and admitted and
         authorized for trading on the Nasdaq National Market, and satisfactory
         evidence of such actions shall have been provided to the
         Representatives.

              (i) At the Execution Time, the Company shall have furnished to the
         Representatives a letter substantially in the form of Exhibit A hereto
         from each officer and director of the Company and the stockholders
         identified on Annex A hereto.

<Page>

                                                                              23


              (j) Concurrent with the consummation of the offering, each share
         of Class A Preferred Stock, and to the extent not previously redeemed,
         each share of Class B Preferred Stock of the Company shall be converted
         into Common Stock (including accrued but unpaid dividends), in each
         case, on the terms set forth in the Prospectus (exclusive of any
         supplement thereto).

              (k) Prior to the Closing Date, the Company shall have furnished to
         the Representatives such further information, certificates and
         documents as the Representatives may reasonably request.

              If any of the conditions specified in this Section 6 shall not
have been fulfilled when and as provided in this Agreement, or if any of the
opinions and certificates mentioned above or elsewhere in this Agreement shall
not be reasonably satisfactory in form and substance to the Representatives and
counsel for the Underwriters, this Agreement and all obligations of the
Underwriters hereunder may be canceled at, or at any time prior to, the Closing
Date by the Representatives. Notice of such cancelation shall be given to the
Company in writing or by telephone or facsimile confirmed in writing.

              The documents required to be delivered by this Section 6 shall be
delivered at the office of Cravath, Swaine & Moore LLP, counsel for the
Underwriters, at 825 Eighth Avenue, New York, NY 10019, on the Closing Date.

              7. REIMBURSEMENT OF UNDERWRITERS' EXPENSES. If the sale of the
Securities provided for herein is not consummated because any condition to the
obligations of the Underwriters set forth in Section 6 hereof is not satisfied,
because of any termination pursuant to Section 10 hereof or because of any
refusal, inability or failure on the part of the Company to perform any
agreement herein or comply with any provision hereof other than by reason of a
default by any of the Underwriters, the Company will reimburse the Underwriters
severally through Citigroup Global Markets Inc. on demand for all out-of-pocket
expenses (including reasonable fees and disbursements of counsel) that shall
have been incurred by them in connection with the proposed purchase and sale of
the Securities.

              8. INDEMNIFICATION AND CONTRIBUTION. (a) The Company agrees to
indemnify and hold harmless each Underwriter, the directors, officers, employees
and agents of each Underwriter and each person who controls any Underwriter
within the meaning of either the Act or the Exchange Act against any and all
losses, claims, damages or liabilities, joint or several, to which they or any
of them may become subject under the Act, the Exchange Act or other Federal or
state statutory law or regulation, at common law or otherwise, insofar as such
losses, claims, damages or liabilities (or actions in respect thereof) arise out
of or are based upon any untrue statement or alleged


<Page>

                                                                              24


untrue statement of a material fact contained in the registration statement for
the registration of the Securities as originally filed or in any amendment
thereof, or in any Preliminary Prospectus or the Prospectus, or in any amendment
thereof or supplement thereto, or arise out of or are based upon the omission or
alleged omission to state therein a material fact required to be stated therein
or necessary to make the statements therein not misleading, and agrees to
reimburse each such indemnified party, as incurred, for any legal or other
expenses reasonably incurred by them in connection with investigating or
defending any such loss, claim, damage, liability or action; PROVIDED, HOWEVER,
that the Company will not be liable in any such case to the extent that any such
loss, claim, damage or liability arises out of or is based upon any such untrue
statement or alleged untrue statement or omission or alleged omission made
therein in reliance upon and in conformity with written information furnished to
the Company by or on behalf of any Underwriter through the Representatives
specifically for inclusion therein; PROVIDED FURTHER, that with respect to any
untrue statement or omission of material fact made in any Preliminary
Prospectus, the indemnity agreement contained in this Section 8(a) shall not
inure to the benefit of any Underwriter from whom the person asserting any such
loss, claim, damage or liability purchased the Securities concerned, to the
extent that any such loss, claim, damage or liability of such Underwriter occurs
under the circumstances where it shall have been determined by a court of
competent jurisdiction by final and nonappealable judgment that (w) the Company
had previously furnished copies of the Prospectus to the Representatives, (x)
delivery of the Prospectus was required by the Act to be made to such person,
(y) the untrue statement or omission of a material fact contained in the
Preliminary Prospectus was corrected in the Prospectus and (z) there was not
sent or given to such person, at or prior to the written confirmation of the
sale of such Securities to such person, a copy of the Prospectus. This indemnity
agreement will be in addition to any liability which the Company may otherwise
have.

              (b) Each Underwriter severally and not jointly agrees to indemnify
and hold harmless the Company, each of its directors, each of its officers who
signs the Registration Statement, and each person who controls the Company
within the meaning of either the Act or the Exchange Act, to the same extent as
the foregoing indemnity from the Company to each Underwriter, but only with
reference to written information relating to such Underwriter furnished to the
Company by or on behalf of such Underwriter through the Representatives
specifically for inclusion in the documents referred to in the foregoing
indemnity. This indemnity agreement will be in addition to any liability which
any Underwriter may otherwise have. The Company acknowledges that the statements
set forth in the last paragraph of the cover page regarding delivery of the
Securities and, under the heading "Underwriting", (i) the list of Underwriters
and their respective participation in the sale of the Securities, (ii) the
sentences related to concessions and reallowances, (iii) the two paragraphs
related to stabilization, syndicate covering transactions and penalty bids
and (iv) the paragraph related to electronic distribution of the prospectus and
allocation for electronic distribution of the Securities in any Preliminary
Prospectus and the Prospectus constitute


<Page>

                                                                              25


the only information furnished in writing by or on behalf of the several
Underwriters for inclusion in any Preliminary Prospectus or the Prospectus.

              (c) Promptly after receipt by an indemnified party under this
Section 8 of notice of the commencement of any action, such indemnified party
will, if a claim in respect thereof is to be made against the indemnifying party
under this Section 8, notify the indemnifying party in writing of the
commencement thereof; but the failure so to notify the indemnifying party (i)
will not relieve it from liability under paragraph (a) or (b) above unless and
to the extent it did not otherwise learn of such action and such failure results
in the forfeiture by the indemnifying party of substantial rights and defenses
and (ii) will not, in any event, relieve the indemnifying party from any
obligations to any indemnified party other than the indemnification obligation
provided in paragraph (a) or (b) above. The indemnifying party shall be entitled
to appoint counsel of the indemnifying party's choice at the indemnifying
party's expense to represent the indemnified party in any action for which
indemnification is sought (in which case the indemnifying party shall not
thereafter be responsible for the fees and expenses of any separate counsel
retained by the indemnified party or parties except as set forth below);
PROVIDED, HOWEVER, that such counsel shall be reasonably satisfactory to the
indemnified party. Notwithstanding the indemnifying party's election to appoint
counsel to represent the indemnified party in an action, the indemnified party
shall have the right to employ separate counsel (including local counsel), and
the indemnifying party shall bear the reasonable fees, costs and expenses of
such separate counsel if (i) the use of counsel chosen by the indemnifying party
to represent the indemnified party would present such counsel with a conflict of
interest, (ii) the actual or potential defendants in, or targets of, any such
action include both the indemnified party and the indemnifying party and the
indemnified party shall have reasonably concluded that there may be legal
defenses available to it and/or other indemnified parties which are different
from or additional to those available to the indemnifying party, (iii) the
indemnifying party shall not have employed counsel reasonably satisfactory to
the indemnified party to represent the indemnified party within a reasonable
time after notice of the institution of such action or (iv) the indemnifying
party shall authorize the indemnified party to employ separate counsel at the
expense of the indemnifying party. An indemnifying party will not, without the
prior written consent of the indemnified parties, settle or compromise or
consent to the entry of any judgment with respect to any pending or threatened
claim, action, suit or proceeding in respect of which indemnification or
contribution may be sought hereunder (whether or not the indemnified parties are
actual or potential parties to such claim or action) unless such settlement,
compromise or consent includes an unconditional release of each indemnified
party from all liability arising out of such claim, action, suit or proceeding.

              (d) In the event that the indemnity provided in paragraph (a) or
(b) of this Section 8 is unavailable to or insufficient to hold harmless an
indemnified party for any reason, the Company and the Underwriters severally
agree to contribute to the aggregate losses, claims, damages and liabilities
(including legal or other expenses reasonably incurred in connection with
investigating or defending same) (collectively "Losses") to which the Company
and one or more of the Underwriters may be subject in such proportion as is
appropriate to reflect the relative benefits received by the Company on

<Page>

                                                                              26


the one hand and by the Underwriters on the other from the offering of the
Securities; PROVIDED, HOWEVER, that in no case shall any Underwriter (except
as may be provided in any agreement among underwriters relating to the
offering of the Securities) be responsible for any amount in excess of the
underwriting discount or commission applicable to the Securities purchased by
such Underwriter hereunder. If the allocation provided by the immediately
preceding sentence is unavailable for any reason, the Company and the
Underwriters severally shall contribute in such proportion as is appropriate
to reflect not only such relative benefits but also the relative fault of the
Company on the one hand and of the Underwriters on the other in connection
with the statements or omissions which resulted in such Losses as well as any
other relevant equitable considerations. Benefits received by the Company
shall be deemed to be equal to the total net proceeds from the offering
(before deducting expenses) received by it, and benefits received by the
Underwriters shall be deemed to be equal to the total underwriting discounts
and commissions, in each case as set forth on the cover page of the
Prospectus. Relative fault shall be determined by reference to, among other
things, whether any untrue or any alleged untrue statement of a material fact
or the omission or alleged omission to state a material fact relates to
information provided by the Company on the one hand or the Underwriters on
the other, the intent of the parties and their relative knowledge, access to
information and opportunity to correct or prevent such untrue statement or
omission. The Company and the Underwriters agree that it would not be just
and equitable if contribution were determined by pro rata allocation or any
other method of allocation which does not take account of the equitable
considerations referred to above. Notwithstanding the provisions of this
paragraph (d), no person guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Act) shall be entitled to contribution from
any person who was not guilty of such fraudulent misrepresentation. For
purposes of this Section 8, each person who controls an Underwriter within
the meaning of either the Act or the Exchange Act and each director, officer,
employee and agent of an Underwriter shall have the same rights to
contribution as such Underwriter, and each person who controls the Company
within the meaning of either the Act or the Exchange Act, each officer of the
Company who shall have signed the Registration Statement and each director of
the Company shall have the same rights to contribution as the Company,
subject in each case to the applicable terms and conditions of this
paragraph (d).

<Page>

                                                                              27


              9. DEFAULT BY AN UNDERWRITER. If any one or more Underwriters
shall fail to purchase and pay for any of the Securities agreed to be purchased
by such Underwriter or Underwriters hereunder and such failure to purchase shall
constitute a default in the performance of its or their obligations under this
Agreement, the remaining Underwriters shall be obligated severally to take up
and pay for (in the respective proportions which the amount of Securities set
forth opposite their names in Schedule I hereto bears to the aggregate amount of
Securities set forth opposite the names of all the remaining Underwriters) the
Securities which the defaulting Underwriter or Underwriters agreed but failed to
purchase; PROVIDED, HOWEVER, that in the event that the aggregate amount of
Securities which the defaulting Underwriter or Underwriters agreed but failed to
purchase shall exceed 10% of the aggregate amount of Securities set forth in
Schedule I hereto, the remaining Underwriters shall have the right to purchase
all, but shall not be under any obligation to purchase any, of the Securities,
and if such nondefaulting Underwriters do not purchase all the Securities, this
Agreement will terminate without liability to any nondefaulting Underwriter or
the Company. In the event of a default by any Underwriter as set forth in this
Section 9, the Closing Date shall be postponed for such period, not exceeding
five Business Days, as the Representatives shall determine in order that the
required changes in the Registration Statement and the Prospectus or in any
other documents or arrangements may be effected. Nothing contained in this
Agreement shall relieve any defaulting Underwriter of its liability, if any, to
the Company and any nondefaulting Underwriter for damages occasioned by its
default hereunder.

              10. TERMINATION. This Agreement shall be subject to termination
in the absolute discretion of the Representatives, by notice given to the
Company prior to delivery of and payment for the Securities, if at any time
prior to such time (i) trading in the Company's Common Stock shall have been
suspended by the Commission or the Nasdaq National Market or trading in
securities generally on the New York Stock Exchange or the Nasdaq National
Market shall have been suspended or limited or minimum prices shall have been
established on such Exchange or the Nasdaq National Market, (ii) a banking
moratorium shall have been declared either by Federal or New York State
authorities or (iii) there shall have occurred any outbreak or escalation of
hostilities, terrorism, declaration by the United States of a national
emergency or war, or other national or international calamity or crisis the
effect of which on financial markets is such as to make it, in the sole
judgment of the Representatives, impractical or inadvisable to proceed with
the offering or delivery of the Securities as contemplated by the Prospectus
(exclusive of any supplement thereto).

              11. REPRESENTATIONS AND INDEMNITIES TO SURVIVE. The respective
agreements, representations, warranties, indemnities and other statements of the

<Page>

                                                                              28


Company or its officers and of the Underwriters set forth in or made pursuant to
this Agreement will remain in full force and effect, regardless of any
investigation made by or on behalf of any Underwriter or the Company or any of
the officers, directors, employees, agents or controlling persons referred to in
Section 8 hereof, and will survive delivery of and payment for the Securities.
The provisions of Sections 7 and 8 hereof shall survive the termination or
cancelation of this Agreement.

              12. NOTICES. All communications hereunder will be in writing and
effective only on receipt, and, if sent to the Representatives, will be mailed,
delivered or telefaxed to the Citigroup Global Markets Inc. General Counsel (fax
no.: (212) 816-7912) and confirmed to the General Counsel, Citigroup Global
Markets Inc., at 388 Greenwich Street, New York, New York, 10013, Attention:
General Counsel; or, if sent to the Company, will be mailed, delivered or
telefaxed to DigitalNet Holdings, Inc. General Counsel (fax no.: (703) 563-7616)
and confirmed to it at DigitalNet Holdings, Inc., 2525 Network Place, Herndon,
Virginia, attention of the Legal Department.

              13. SUCCESSORS. This Agreement will inure to the benefit of and be
binding upon the parties hereto and their respective successors and the
officers, directors, employees, agents and controlling persons referred to in
Section 8 hereof, and no other person will have any right or obligation
hereunder.

              14. APPLICABLE LAW. This Agreement will be governed by and
construed in accordance with the laws of the State of New York applicable to
contracts made and to be performed within the State of New York.

              15. COUNTERPARTS. This Agreement may be signed in one or more
counterparts, each of which shall constitute an original and all of which
together shall constitute one and the same agreement.

              16. HEADINGS. The section headings used herein are for convenience
only and shall not affect the construction hereof.

              17. DEFINITIONS. The terms which follow, when used in this
Agreement, shall have the meanings indicated.

                  "Act" shall mean the Securities Act of 1933, as amended, and
         the rules and regulations of the Commission promulgated thereunder.

                  "Business Day" shall mean any day other than a Saturday, a
         Sunday or a legal holiday or a day on which banking institutions or
         trust companies are authorized or obligated by law to close in New York
         City.

                  "Commission" shall mean the Securities and Exchange
         Commission.

                  "Effective Date" shall mean each date and time that the
         Registration Statement, any post-effective amendment or amendments
         thereto and any Rule 462(b) Registration Statement became or become
         effective.


<Page>

                                                                              29


                  "Exchange Act" shall mean the Securities Exchange Act of 1934,
         as amended, and the rules and regulations of the Commission promulgated
         thereunder.

                  "Execution Time" shall mean the date and time that this
         Agreement is executed and delivered by the parties hereto.

                  "Material Adverse Effect" shall mean any material adverse
         effect on the condition (financial or otherwise), prospects, earnings,
         business or properties of the Company and its subsidiaries, taken as a
         whole, whether or not arising from transactions in the ordinary course
         of business.

                  "Preliminary Prospectus" shall mean any preliminary prospectus
         referred to in paragraph 1(a) above and any preliminary prospectus
         included in the Registration Statement at the Effective Date that omits
         Rule 430A Information.

                  "Prospectus" shall mean the prospectus relating to the
         Securities that is first filed pursuant to Rule 424(b) after the
         Execution Time or, if no filing pursuant to Rule 424(b) is required,
         shall mean the form of final prospectus relating to the Securities
         included in the Registration Statement at the Effective Date.

                  "Registration Statement" shall mean the registration statement
         referred to in paragraph 1(a) above, including exhibits and financial
         statements, as amended at the Execution Time (or, if not effective at
         the Execution Time, in the form in which it shall become effective)
         and, in the event any post-effective amendment thereto or any Rule
         462(b) Registration Statement becomes effective prior to the Closing
         Date, shall also mean such registration statement as so amended or such
         Rule 462(b) Registration Statement, as the case may be. Such term shall
         include any Rule 430A Information deemed to be included therein at the
         Effective Date as provided by Rule 430A.

                  "Rule 424", "Rule 430A" and "Rule 462" refer to such rules
         under the Act.

                  "Rule 430A Information" shall mean information with respect to
         the Securities and the offering thereof permitted to be omitted from
         the Registration Statement when it becomes effective pursuant to Rule
         430A.

                  "Rule 462(b) Registration Statement" shall mean a registration
         statement and any amendments thereto filed pursuant to Rule 462(b)
         relating to the offering covered by the registration statement referred
         to in Section 1(a) hereof.


<Page>

                                                                              30


              If the foregoing is in accordance with your understanding of
our agreement, please sign and return to us the enclosed duplicate hereof,
whereupon this letter and your acceptance shall represent a binding agreement
among the Company and the several Underwriters.


                                                     Very truly yours,

                                                     DigitalNet Holdings, Inc.

                                                     By:
                                                          ----------------------
                                                          Name:
                                                          Title:




The foregoing Agreement is hereby
confirmed and accepted as of the
date first above written.

Citigroup Global Markets Inc.
UBS Securities LLC

By:  Citigroup Global Markets Inc.

By:
     -----------------------
     Name:
     Title:

For themselves and the other
several Underwriters named in
Schedule I to the foregoing
Agreement.