ManTech International Corporation (Nasdaq: MANT), a leading provider of technical and engineering services and solutions vital to the nation’s interest and security, announced today that it has received a five-year, $8.8 million contract from NATO’s Headquarters, Supreme Allied Command Transformation to support their Joint Analysis and Lessons Learned Centre (JALLC). The JALLC is NATO’s lead agency for the analysis of operations, exercises, training and experiments, and for the collection and communication of lessons learned. JALLC deploys teams worldwide to support NATO, analyzing all aspects of the Alliance’s work at the operational and strategic levels. JALLC’s base in Monsanto, near Lisbon, Portugal also hosts NATO’s Lessons Learned Database, where lessons are captured, stored and processed. ManTech operational analysts will serve on JALLC analysis teams and assist in data collection and analysis for ongoing as well as emergent NATO operations. JALLC’s analysis process embraces all aspects of an operational issue, from doctrine and training to operational processes, logistical support, command and control, and communication processes. “ManTech has extensive experience supporting worldwide national security missions,” said Louis Addeo, President, Technical Services Group, ManTech International Corporation. “In fact, many facets of our Smart Power ‘whole of government’ issues solution closely mirror NATO’s efforts to identify and benefit from best practices and lessons learned. We are excited to be able to offer our expertise to help accomplish JALLC’s important mission.” JALLC currently works with NATO’s operations in Kosovo, Iraq and Afghanistan and on maritime security operations in the Mediterranean. They support NATO exercises for the NATO Response Force and the training of troops prior to deployment on NATO operations. JALLC has also contributed analysis expertise during NATO’s humanitarian relief efforts following the Pakistan earthquake in 2005 and security operations during the Olympic Games in Athens in 2004. 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.