Prior to 9/11 , TAC was instrumental in providing pattern recognition and data mining software applications that served as the basis for the US Government ’s original terrorist watchlist database called TIPOFF . In 2003 , TAC assisted the Government in standing up the Terrorist Screening Center ( TSC ) the Terrorist Threat Integration Center ( TTIC ) , and its successor , the National Counterterrorism Center ( NCTC ) . Key practice areas included intelligence and Federal Law Enforcement support for terrorist screening , watchlist development and operations ; intelligence analysis ; systems integration and software development ; multilingual name search ; and pattern matching . It was awarded over $ 400m in government contracts since 2000 , including some $ 30.6 m in 2007 , $ 19.5 m in 2008 , and $ 150m in 2009 . Customers included the Department of State , National Targeting Center ( NTC ) , Defense Intelligence Agency ( DIA ) , National Security Agency ( NSA ) , Office of Naval Intelligence ( ONI ) , NCTC , TSC , and the FBI
9/11
September 11 attacks
The Analysis Corporation