EX-10.49






EXECUTION COPY




CREDIT SUISSE FIRST BOSTON

Eleven Madison Avenue

New York, NY 10010




CONFIDENTIAL




March 4, 2005




Alion Science and Technology Corporation


1750 Tysons Boulevard


McLean, VA 22102



Attention: John M. Hughes




Chief Financial Officer



Alion Science and Technology Corporation

$72,000,000 Incremental Term Loan Facility

Proposed Amendment to Existing Term Loan Facility

Commitment Letter




Ladies and Gentlemen:



Reference is made to the Credit Agreement dated as of August 2, 2004 (the “Credit Agreement”),
among Alion Science and Technology Corporation, a Delaware corporation (the “Borrower” or “you”),
the lenders party thereto (the “Lenders”) and Credit Suisse First Boston (together with its
affiliates, “CSFB”, “we” or “us”), as Administrative Agent and Collateral Agent. Terms used but not
defined in this commitment letter (this “Commitment Letter”) shall have the meanings assigned
thereto in the Credit Agreement.



You have informed the Administrative Agent that (a) you have consummated or intend to
consummate one or more Permitted Acquisitions, (b) pursuant to Section 2.24 of the Credit
Agreement, you desire to obtain Incremental Term Loan Commitments for Term Loans (or, to the extent
contemplated by the fourth paragraph of the fee letter dated the date hereof, between the Borrower
and CSFB (the “Fee Letter”), Other Term Loans) in an aggregate principal amount of $72,000,000 (the
“Incremental Term Facility”) and to use the proceeds thereof to finance such Permitted Acquisitions
(or to repay Revolving Loans used to finance such Permitted Acquisitions), to pay related fees and
expenses and for other general corporate purposes and (c) you desire to amend the Credit Agreement
(the “Proposed Amendment”) to (i) reduce the Applicable Percentage with respect to the outstanding
Term Loans thereunder and (ii) permit the Borrower to maintain a maximum Leverage Ratio of 3.75 to
1.0 through December 31, 2005.



In connection with the foregoing, CSFB is pleased to advise you of (a) its commitment to
provide the entire principal amount of the Incremental Term Facility and (b) its agreement to use
commercially reasonable efforts to arrange the Proposed Amendment, in each case upon the terms and
subject to the conditions set forth in this Commitment Letter.



You hereby appoint CSFB to act, and CSFB hereby agrees to act, as sole administrative agent,
sole bookrunner and sole lead arranger for the Incremental Term Facility. CSFB, in such capacities,
will perform the duties and exercise the authority customarily performed and exercised by it in
such roles. You agree that no other titles will be awarded and no compensation (other than that
expressly contemplated by this Commitment Letter and the Fee Letter) will be paid in connection
with the Incremental Term Facility or the Proposed Amendment unless you and we shall so agree.



We reserve the right, prior to or after the execution of definitive documentation for the
Incremental Term Facility, to syndicate all or a portion of our commitment in respect of the
Incremental Term Facility to a group of financial institutions identified by us in consultation
with and reasonably acceptable to you (together with CSFB, the “New Term Lenders”). We intend to
commence syndication efforts promptly upon the execution of this Commitment Letter, and you agree
actively to assist us in completing a satisfactory syndication. Such assistance shall include (a)
your using commercially reasonable efforts to ensure that any syndication efforts benefit from your
existing lending and investment banking relationships, (b) direct contact (at times mutually
agreed) between senior management, representatives and advisors of the Borrower and the proposed
New Term Lenders, (c) assistance by you in the preparation of a Confidential Information Memorandum
for the Incremental Term Facility and other marketing materials to be used in connection with the
syndication, (d) prior to the launch of the syndication, the obtaining of ratings for the
Incremental Term Facility from each of Standard & Poor’s Ratings Service and Moody’s Investors
Service, Inc., and (e) the hosting, with CSFB, of one or more meetings (at times mutually agreed)
of prospective New Term Lenders. You agree, at the request of CSFB, to assist in the preparation of
a version of the Confidential Information Memorandum and other marketing materials and
presentations to be used in connection with the syndication of the Incremental Term Facility,
consisting exclusively of information and documentation that is either (i) publicly available or
(ii) not material with respect to the Borrower and its subsidiaries and any of their respective
securities for purposes of United States Federal and state securities laws.



CSFB will manage, in consultation with you, all aspects of the syndication of the Incremental
Term Facility, including decisions as to the selection of institutions to be approachedand when
they will be approached, when their commitments will be accepted, which institutions will
participate and the allocation of the commitments among the New Term Lenders (subject to the
institutions which will participate and the commitment allocations being reasonably acceptable to
you).



To assist CSFB in its syndication efforts, you agree promptly to prepare and provide to CSFB
all information with respect to the Borrower and its subsidiaries, including all financial
information and projections (the “Projections”), as we may reasonably request. You hereby represent
and covenant that (a) all information other than the Projections and information of a general
economic nature (the “Information”), taken as a whole, that has been or will be prepared by or on
behalf of you or any of your representatives and that has been or will be made available to CSFB by
you or any of your representatives in connection with the transactions contemplated hereby is or
will be, when furnished, complete and correct in all material respects and does not or will not,
when furnished, contain any untrue statement of a material fact or omit to state a material fact
necessary in order to make the statements contained therein not materially misleading in light of
the circumstances under which such statements are made and (b) the Projections that have been or
will be prepared by or on behalf of you or any of your representatives and that have been or will
be made available to CSFB by you or any of your representatives in connection with the transactions
contemplated hereby have been or will be prepared in good faith based upon assumptions that are
reasonable at the time made and at the time the related Projections are made available to CSFB (it
being understood that the Projections are subject to significant uncertainties and contingencies,
many of which are beyond the control of the Borrower, and that no assurance can be given that such
Projections will be realized). You agree that if at any time prior to the closing of the
Incremental Term Facility and the effectiveness of the Proposed Amendment any of the
representations in the preceding sentence would be incorrect if the Information and Projections
were being furnished, and such representations were being made by you, at such time, then you will
promptly supplement the Information and the Projections so that such representations will be
correct under those circumstances. In arranging and syndicating the Incremental Term Facility and
arranging the Proposed Amendment, we will be entitled to use and rely primarily on the Information
and the Projections without responsibility for independent verification thereof.



As consideration for CSFB’s commitment hereunder and agreements to perform the services
described herein, you agree to pay to CSFB the fees set forth in the Fee Letter.



CSFB’s commitment hereunder and agreement to perform the services described herein are subject
to (a) our not having discovered or otherwise become aware of any information not previously
disclosed to us that we believe to be inconsistent in a material and adverse manner with our
understanding, based on the information, taken as a whole, provided to us prior to the date hereof,
of the business, assets, liabilities, operations, financial condition or Projections of the
Borrower and its subsidiaries, taken as a whole, (b) there not having occurred any event, change or
condition since September 30, 2004 (the date of the most recent audited financial statements of the
Borrower delivered to CSFB as of the date hereof) that, individually or in the aggregate, has
caused, or could reasonably be expected to cause, a material adverse condition in or materially
adverse effect on the business, assets, liabilities, operations or financial condition of the
Borrower and its subsidiaries, taken as a whole, (c) the absence of a material disruption or
adverse change in financial, banking or capital markets generally, or in the market for new
issuances of leveraged loans in particular, in each case that, in CSFB’s reasonable judgment, could
be expected to materially impair the syndication of the Incremental Term Facility, (d) our
satisfaction that, prior to and during the syndication of the Incremental Term Facility, there
shall be no other issues of debt securities or commercial bank or other credit facilities of the
Borrower or its subsidiaries being offered, placed or arranged, (e) the negotiation, execution and
delivery of definitive documentation with respect to the Incremental Term Facility reflecting the
terms and conditions set forth herein and in the Credit Agreement and otherwise reasonably
satisfactory to CSFB and its counsel, (f) CSFB’s having been afforded a period of at least 20
consecutive days following the launch of the general syndication of the Incremental Term Facility
(“launch” being defined as the date of the general meeting with prospective New Term Lenders) and
immediately prior to the closing date to syndicate the Incremental Term Facility and (g) your
compliance with the terms of the Fee Letter.



You acknowledge that CSFB and its affiliates may be providing debt financing, equity capital
or other services (including financial advisory services) to other companies in respect of which
you may have conflicting interests regarding the transactions described herein and otherwise.
Neither we nor any of our affiliates will use confidential information obtained from you by virtue
of the transactions contemplated by this Commitment Letter or our other relationships with you in
connection with the performance by us of services for other companies, and we will not furnish any
such information to other companies. You also acknowledge that neither we nor any of our affiliates
has any obligation to use in connection with the transactions contemplated by this Commitment
Letter, or to furnish to you, confidential information obtained by us from other companies.



This Commitment Letter shall not be assignable by you without the prior written consent of
CSFB (and any attempted assignment without such consent shall be null and void), is intended to be
solely for the benefit of the parties hereto (and Indemnitees (as defined below)), is not intended
to confer any benefits upon, or create any rights in favor of, any person other than the parties
hereto (and Indemnitees) and is not intended to create a fiduciary relationship between the parties
hereto. CSFB may assign its commitment hereunder to any of its affiliates or, with your consent
(which shall not be unreasonably withheld or delayed), to any prospective New Term Lender. Any such
assignment to an affiliate will not relieve CSFB from any of its obligations hereunder unless and
until such affiliate shall have funded the portion of the commitment so assigned (or the commitment
of CSFB hereunder shall have otherwise terminated in accordance with the terms of this Commitment
Letter). Any such assignment to a prospective New Term Lender shall release CSFB from the portion
of its commitment hereunder so assigned. Any and all obligations of, and services to be provided
by, CSFB hereunder may be performed and any and all rights of CSFB hereunder may be exercised by or
through any of its affiliates or branches. This Commitment Letter may not be amended or any
provision hereof waived or modified except by an instrument in writing signed by CSFB and you. This
Commitment Letter may be executed in any number of counterparts, each of which shall be an original
and all of which, when taken together, shall constitute one agreement. Delivery of an executed
counterpart of a signature page of this Commitment Letter by facsimile or electronic transmission
shall be effective as delivery of a manually executed counterpart hereof. THIS COMMITMENT LETTER
SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE



STATE OF NEW YORK.



EACH OF THE PARTIES HERETO IRREVOCABLY WAIVES THE RIGHT TO TRIAL BY JURY IN ANY ACTION,
PROCEEDING, CLAIM OR COUNTERCLAIM BROUGHT BY OR ON BEHALF OF ANY PARTY RELATED TO OR ARISING OUT OF
THIS COMMITMENT LETTER OR THE PERFORMANCE OF SERVICES HEREUNDER.



Each of the parties hereto hereby irrevocably and unconditionally (a) submits, for itself and
its property, to the non-exclusive jurisdiction of any New York State court or Federal court of the
United States of America sitting in New York City, and any appellate court from any thereof, in any
action or proceeding arising out of or relating to this Commitment Letter or the transactions
contemplated hereby, or for recognition or enforcement of any judgment, and agrees that all claims
in respect of any such action or proceeding may be heard and determined in such New York State or,
to the extent permitted by law, in such Federal court, (b) waives, to the fullest extent it may
legally and effectively do so, any objection which it may now or hereafter have to the laying of
venue of any suit, action or proceeding arising out of or relating to this Commitment Letter or the
transactions contemplated hereby in any New York State or in any such Federal court and (c) waives,
to the fullest extent permitted by law, the defense of an inconvenient forum to the maintenance of
such action or proceeding in any such court.



This Commitment Letter is delivered to you on the understanding that neither this Commitment
Letter nor the Fee Letter nor any of their terms or substance shall be disclosed, directly or
indirectly, to any other person except (a) to your affiliates, officers, directors, employees,
attorneys, accountants and advisors on a confidential and need-to-know basis or (b) as required by
applicable law or compulsory legal process (in which case you agree to inform us promptly thereof).
CSFB acknowledges and agrees that the Borrower may file this Commitment Letter with the Securities
and Exchange Commission as an exhibit to any of its periodic reports. CSFB acknowledges and agrees
that the provisions of Section 9.16 (Confidentiality) of the Credit Agreement apply to all
Information (as defined therein) provided by the Borrower to CSFB hereunder or in connection with
the Incremental Term Facility.



Notwithstanding anything herein to the contrary, any party to this Commitment Letter (and any
employee, representative or other agent of such party) may disclose to any and all persons, without
limitation of any kind, the tax treatment and tax structure of the transactions contemplated by
this Commitment Letter and the Fee Letter and all materials of any kind (including opinions or
other tax analyses) that are provided to it relating to such tax treatment and tax structure,
except that (i) tax treatment and tax structure shall not include the identity of any existing or
future party (or any affiliate of such party) to this Commitment Letter or the Fee Letter and (ii)
no party shall disclose any information relating to such tax treatment and tax structure to the
extent nondisclosure is reasonably necessary in order to comply with applicable securities laws.
For this purpose, the tax treatment of the transactions contemplated by this Commitment Letter and
the Fee Letter is the purported or claimed U.S. federal income tax treatment of such transactions
and the tax structure of such transactions is any fact that may be relevant to understanding the
purported or claimed U.S. federal income tax treatment of such transactions.



The Borrower acknowledges and agrees that the provisions of Section 9.05 (Expenses; Indemnity)
of the Credit Agreement apply to the actions and activities of CSFB and its affiliates and their
respective Related Parties (collectively referred to as “Indemnitees”) under this Commitment Letter
and the Fee Letter and in connection with the proposed Incremental Term Facility and the Proposed
Amendment.



The compensation, reimbursement, indemnification, confidentiality, jurisdiction and waiver of
jury trial provisions contained herein and in the Fee Letter shall remain in full force and effect
regardless of whether definitive financing documentation for the Incremental Term Facility or the
Proposed Amendment shall be executed and delivered and notwithstanding the termination of this
Commitment Letter.



You acknowledge that the Proposed Amendment will require the consent of the Required Lenders
and each Term Lender. CSFB supports the Proposed Amendment and intends to recommend the Proposed
Amendment to the Lenders for their approval, but no assurance can be given that such approval will
be obtained.



CSFB hereby notifies you that pursuant to the requirements of the USA PATRIOT Act, Title III
of Pub. L. 107-56 (signed into law October 26, 2001) (the “PATRIOT Act”), CSFB and each Lender is
required to obtain, verify and record information that identifies the Borrower, which information
includes the name, address, tax identification number and other information regarding the Borrower
that will allow CSFB or such Lender to identify the Borrower in accordance with the PATRIOT Act.
This notice is given in accordance with the requirements of the PATRIOT Act and is effective as to
CSFB and each Lender.



If the foregoing correctly sets forth our agreement, please indicate your acceptance of the
terms of this Commitment Letter and of the Fee Letter by returning to us executed counterparts
hereof and the Fee Letter not later than 5:00 p.m. (New York City time) on March 4, 2005. CSFB’s
commitment hereunder and agreements contained herein will expire at such time in the event that
CSFB has not received such executed counterparts in accordance with the immediately preceding
sentence. In the event the initial borrowing in respect of the Incremental Term Facility does not
occur on or before April 30, 2005, then this Commitment Letter and CSFB’s commitment and
undertakings hereunder shall automatically terminate unless CSFB shall, in its discretion, agree to
an extension. Neither the execution and delivery of this Commitment Letter nor the termination
hereof shall affect your obligations under the fee letter dated June 10, 2004, between the Borrower
and CSFB (the “Existing Fee Letter”). The Borrower and CSFB agree that this Commitment Letter and
the Fee Letter shall be effective as of March 4, 2005.



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CSFB is pleased to have been given the opportunity to assist you in connection with this
important financing.



Very truly yours,



CREDIT SUISSE FIRST BOSTON,


Acting through its Cayman Islands Branch



By: /s/ Christopher G. Cunningham


Name: Christopher G. Cunningham


Title: Managing Director



By: /s/ Robert Hetu


Name: Robert Hetu


Title: Director



Accepted and agreed as of the date first above


Written:



ALION SCIENCE AND TECHNOLOGY


CORPORATION



By: /s/ John M. Hughes


Name: John M. Hughes

Title: Senior Vice President and Chief Financial Officer




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