ManTech to Offer Certifications from International Council on Systems Engineering

FAIRFAX, Va.--(BUSINESS WIRE)--ManTech International Corporation (Nasdaq:MANT) and the International Council on Systems Engineering (INCOSE) announced today that ManTech will offer INCOSE’s Certified Systems Engineering Professional (CSEP) program to its employees. To become certified employees must have a minimum of five years of relevant experience, a bachelor of science degree in a technical field such as engineering, physics, math or chemistry, and pass the INCOSE certification exam.

“ManTech is a leader in systems engineering and it is one of the most critical capabilities we provide our customers”

“ManTech is a leader in systems engineering and it is one of the most critical capabilities we provide our customers,” said Lawrence B. Prior, III, President and COO, ManTech International Corporation. “CSEP is a widely respected credential and our employees who achieve this certification will enhance their professional development and be able to use their increased skill and knowledge to benefit our customers.”

“INCOSE is pleased to enter this agreement with ManTech to advance the practice of systems engineering and to welcome their experts into our certification program. Together, we will build upon INCOSE’s CSEP designation as the worldwide reference for systems engineering professionalism," said Pat Hale, President of INCOSE.

ManTech is a recognized leader in systems engineering and analysis; modeling, simulation and analysis; risk management and mission assurance; technology integration; range and environmental assurance; and test and evaluation. The company provides these services worldwide to government customers in defense, space and intelligence, and to commercial companies.

ManTech will offer CSEP certification through ManTech University, its award-winning, nationally recognized corporate university.

About INCOSE

INCOSE is a not-for-profit professional organization serving about 7,000 members in over 22 countries. INCOSE’s mission is to share, promote and advance the best of systems engineering from across the globe for the benefit of humanity and the planet.

About ManTech International Corporation:

Headquartered in Fairfax, Virginia with approximately 8,000 professionals, 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; National Oceanic and Atmospheric Administration; and other U.S. federal government customers. ManTech’s expertise includes systems engineering, systems integration, software development services, 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. The company supports the advanced telecommunications systems that are used in Operation Iraqi Freedom and in other parts of 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 40 countries. In 2008, BusinessWeek magazine chose ManTech for its ‘InfoTech 100’ listing representing the best performing tech companies in the world; Forbes.com named ManTech as one of the 400 Best Big Companies in the nation; and A-Space, a Web 2.0 enhanced collaboration tool that ManTech developed for the Intelligence Community was named one of the Top 50 Inventions of the Year by Time magazine. Also in 2008, GI Jobs magazine named ManTech a Top Ten Military Friendly Employer for the third year in a row. 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. Words such as "may,” "will,” "intends,” "should,” "expects,” "plans,” "projects,” "anticipates,” "believes,” "estimates,” "predicts,” "potential,” "continue,” or "opportunity," or the negative of these terms or words of similar import are intended to identify forward-looking statements.

These forward-looking statements are subject to known and unknown risks and uncertainties, which could cause actual results to differ materially from those anticipated, including, without limitation: adverse changes in U.S. government spending priorities; failure to retain existing U.S. government contracts, win new contracts, or win recompetes; adverse results of U.S. government audits of our government contracts; risks associated with complex U.S. government procurement laws and regulations; adverse effect of contract consolidations; risk of contract performance or termination; failure to obtain option awards, task orders or funding under contracts; adverse changes in our mix of contract types; failure to successfully integrate recently acquired companies or businesses into our operations or to realize any accretive or synergistic effects from such acquisitions; failure to identify, execute or effectively integrate future acquisitions; risks of financing, such as increases in interest rates and restrictions imposed by our credit agreement; risks related to an inability to obtain new or additional financing; and competition. 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 February 27, 2009, and, from time to time, in ManTech's other filings with the Securities and Exchange Commission, including among others, its reports on Form 10-Q.

The forward-looking statements included in this news release are only made as of the date of this news 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.