ManTech International Corporation (NASDAQ: MANT), a leading provider of innovative technologies and solutions for mission-critical national security programs, has named H. Christopher Goodrich as Vice President for National Security Agency (NSA) Programs in its Mission, Cyber and Technology Solutions group. Mr. Goodrich will be the focal point for all ManTech activities at NSA including existing programs and growth opportunities.

Prior to joining ManTech Mr. Goodrich worked for Northrop Grumman TASC where he supported a number of NSA initiatives. He was the program manager for two large IT support services contracts: the Cryptanalysis and Exploitation Services Consolidated Performance Contract and the AXISS Indefinite-Delivery, Indefinite-Quantity program. He also established the Northrop Grumman ESSEX business unit as a market leader in support to the NSA. Before joining Northrop Grumman he was the regional manager for government programs for Saffron Technology, a data mining company.

“Chris has a long and successful history of support to the Intelligence Community – including industry and government experience,” said Bill Varner, President, ManTech Mission, Cyber and Technology Solutions group. “His knowledge of the NSA mission and the technologies that can support those efforts will help us to significantly enhance our support to the agency.”

Mr. Goodrich received a bachelor of science degree in computer science from Chaminade University and is a graduate of the Air War College.

About ManTech International Corporation:

Headquartered in Fairfax, Virginia with approximately 8,900 professionals, 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 and Justice; the Space Community; the National Oceanic and Atmospheric Administration; and other U.S. federal government customers. ManTech’s expertise includes systems engineering, systems integration, enterprise architecture, cyber security, information assurance, intelligence operations and analysis support, network and critical infrastructure protection, information operations and information warfare support, information technology, communications integration, global logistics and supply chain management, and service oriented architectures. Additional information on ManTech can be found at www.mantech.com.

Forward-Looking Information:

Statements in this announcement, other than historical data and information, constitute forward-looking statements that involve risks and uncertainties. A number of factors could cause our actual results, performance, achievements, or industry results to be very different from the results, performance, or achievements expressed or implied by such forward-looking statements. Some of these factors include, but are not limited to, the risk factors set forth in ManTech's Annual Report on Form 10-K for the period ended December 31, 2009, and other periodic and current reports that ManTech makes with the SEC from time to time. Due to such uncertainties and risks, readers are cautioned not to place undue reliance on such forward-looking statements, which speak only as of the date hereof.

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