ManTech International Corporation (NASDAQ:MANT) was awarded a subcontract by PD Systems, Inc. to provide contractor logistics support services to the U.S. Army’s Product Manager, Improvised Explosive Device Defeat/Protect Force (PM IEDD/PF). The award is valued at $28 million, with an initial period of performance of 12 months plus a base option and two additional option years.

Under the contract, ManTech will provide PM IEDD/PF with system integration and installation, equipment repair, troubleshooting, training, parts management and asset tracking for the entire range of PM IEDD/PF equipment. The work will be performed at sites in Afghanistan, Iraq, Kuwait, Oman and 40 other sites in the U.S. and abroad.

“Fielding and sustaining equipment to neutralize the threat posed by IEDs is an important function that directly saves lives,” said Kevin C. Cody, president of ManTech Technical Services Group’s Systems Sustainment and Integrated Logistics business unit.

“Our in-theater experience and expertise will be great assets to the program,” said Louis M. Addeo, president and chief operating officer of ManTech’s Technical Services Group. “We are proud to have been selected again to help support this important mission.”

About ManTech International Corporation

ManTech is a leading provider of innovative technologies and solutions for mission-critical national security programs for the intelligence community; the departments of Defense, State, Homeland Security, Energy and Justice, including the Federal Bureau of Investigation; the space community; the National Oceanic and Atmospheric Administration; and other U.S. federal government customers. We provide support to critical national security programs for approximately 60 federal agencies through 1,000 current contracts. ManTech’s expertise includes command, control, communications, computers, intelligence, surveillance and reconnaissance (C4ISR) lifecycle support, cyber security, global logistics support, intelligence/counter-intelligence support, information technology modernization and sustainment, systems engineering, and test and evaluation. ManTech supports major national missions, such as military readiness, terrorist threat detection, information security and border protection. Additional information on ManTech can be found at www.mantech.com.

Forward-Looking Information

Statements and assumptions made in this press release, which do not address historical facts, constitute “forward-looking” statements that ManTech believes to be within the definition in the Private Securities Litigation Reform Act of 1995 and involve risks and uncertainties, many of which are outside of our control. These forward-looking statements are inherently subject to risks and uncertainties, and actual results and outcomes may differ materially from the results and outcomes we anticipate. Factors that could cause actual results to differ materially from those we anticipate include, but are not limited to, adverse changes in future levels of expenditures for programs we support caused by budgetary pressures facing the federal government and changing mission priorities; the failure to obtain option awards, task orders or funding under the contract; risk of contract performance, modification, or termination; the failure to maintain strong relationships with other contractors; and risks associated with complex U.S. government procurement laws and regulations. These and other risk factors are more fully discussed in the section entitled “Risks Factors” in ManTech’s Annual Report on Form 10-K, filed with the Securities and Exchange Commission on Feb. 25, 2011, and from time to time in ManTech’s other filings. The forward-looking statements included in this news release are only made as of the date of this press release, and ManTech undertakes no obligation to publicly update any of the forward-looking statements made herein, whether as a result of new information, subsequent events or circumstances, changes in expectations or otherwise.

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