Celebration for ManTech's Office Opening in San Antonio Cancelled Due to Weather Conditions -- Was Scheduled for Jan. 18, 4 p.m.


FAIRFAX, Va., Jan. 17, 2007 (PRIME NEWSWIRE) -- ManTech International Corporation (Nasdaq:MANT), a leading provider of innovative technologies and solutions focused on mission-critical national security programs for the Intelligence Community; the Departments of Defense, State, Homeland Security and Justice; the Space Community; and other U.S. federal government customers announced today that it has cancelled its ceremony for the opening of its San Antonio, Texas, office, previously scheduled for Jan. 18., 4 p.m. to 8 p.m., 100 N.E. Loop 410, Suite 450 (One International Centre), San Antonio. The event was cancelled due to poor weather conditions; a new date has not been scheduled.

About ManTech International Corporation:

Headquartered in Fairfax, Virginia, ManTech International Corporation 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; and other U.S. federal government customers. ManTech's expertise includes systems engineering, systems integration, technology and software development, enterprise security architecture, information assurance, intelligence operations support, network and critical infrastructure protection, information technology, communications integration and engineering support. The company supports the advanced telecommunications systems that are used in Operation Iraqi Freedom and in other parts of the world; provides the physical and cyber security to protect U.S. embassies all over the world; has developed a secure, collaborative communications system for the U.S. Department of Homeland Security; and builds and maintains secure databases that track terrorists. The company operates in the United States and over 40 countries worldwide. In 2005, Red Herring magazine selected ManTech as one of its Small Cap 100 Companies; and in 2006, Business 2.0 magazine named ManTech one of its 100 Fastest Growing Technology Companies. Additional information on ManTech can be found at www.mantech.com.



            

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