The U.S. Department of Defense's Combating Terrorism Technical Support Office (CTTSO) has awarded ManTech International Corporation a one-year extension to provide scientific, engineering, technical, and administrative support. The mission of the CTTSO is to conduct the National R&D Program for Combating Terrorism through rapid research, development and prototyping. ManTech's services will help to improve policy development, management, and administration as well as systems operations that support the CTTSO mission. Under the contract extension, ManTech will continue to provide the CTTSO with Advisory and Assistance Services (A&AS). ManTech's services will also go to support the CTTSO's Technical Support Working Group (TSWG). The TSWG is an interagency body that develops tools for use in the battle against terrorism.