CSSI is a technical and engineering services company with headquarters in Washington, D.C., and additional offices in Charleston, S.C., Egg Harbor, N.J., and Lexington Park, Md. The company specializes in providing system analysis, airspace initiatives, engineering, application development, information technology and program management. Its clients include the international and United States aviation industry, the Federal Aviation Administration, NASA and the Department of Defense. CSSI received the Air Traffic Control Association's Small and Disadvantaged Business Award in 1998, 1999 and 2000. The company was founded in 1990 and achieved ISO:9001 Certification in 2001. It is affiliated with the Air Traffic Control Association and the American Institute of Aeronautics and Astronautics.