ManTech International
Corporation , a Fairfax, Virginia-based IT and technical
services solution provider supporting Department of Defense and
intelligence community customers, announced today that the U.S. Air
Force 21st Space Wing based in Colorado Springs, Colorado has awarded
ManTech Aegis Research Corporation (MARC) the Space Control
Information and Mission Systems Support (SCIMSS) contract.
Competitively awarded under the GSA IT Services Schedule, the SCIMMS
contract has an estimated value of $6.8 million covering a six month
base period and three one-year options.

Commenting on the award, ManTech National Security Solutions Group
President Evan Hineman, stated “The SCIMMS win is an excellent example
of business synergy between an established ManTech subsidiary, ManTech
Advanced Systems International, Inc. and a recent acquisition, neither
of which would have competed separately for this work–we are very
pleased with this award.”

Under the terms of the contract, ManTech will provide a broad
range of information technology services to four Air Force operations
locations in the western United States, expanding ManTech’s support to
Air Force space activities in the areas of network support and
operations and maintenance.

About ManTech International Corporation:

Headquartered in Fairfax, Virginia, ManTech International
Corporation delivers a broad array of information technology and
technical services solutions to U.S. federal government customers,
focusing primarily on critical national defense programs for the
intelligence community and Department of Defense. ManTech designs,
develops, procures, implements, operates, tests and maintains
mission-critical, enterprise information technology and communication
systems and infrastructures for federal government customers in the
United States and 34 countries worldwide. Additional information on
ManTech can be found at

Statements made in this press release which do not address
historical facts could be interpreted to be forward-looking
statements. Examples of such forward looking statements include the
company’s ability (i) to continue to experience synergies from the
integration of previous merger and acquisition activity, (ii) to
expand its core competencies of network and operations and maintenance
support to Air Force space activities and (iii) to perform the
contract for the entire six-month base period and three one-year
options. Such statements are subject to factors that could cause
actual results to differ materially from anticipated results. The
factors that could cause actual results to differ materially from
those anticipated include, but are not limited, to the following:
failure of government customers to exercise options under contracts;
funding decisions of U.S. Government projects; government contract
procurement (such as bid protest) and termination risks; competitive
factors such as pricing pressures and/or competition to hire and
retain employees; failure to experience favorable results from
acquisition synergies; material changes in laws or regulations
applicable to the company’s businesses and other risk factors
discussed in the company’s filings with the Securities and Exchange
Commission. The statements in this press release are made as of July
9, 2003, and the Company undertakes no obligation to update any of the
forward-looking statements made herein, whether as a result of new
information, future events, changes in expectations or otherwise.