After the Christmas 2009 terrorist attempt on Northwest Airlines Flight 253 , the NCTC was tasked with creating a process to " thoroughly and exhaustively " prioritize terrorism threat threads ; identify follow-up action by intelligence , law enforcement and homeland security ; and enhance the " Terrorist Identities Datamart Environment " database , to add names to watchlists
Northwest Airlines Flight 253
Northwest Airlines Flight 253
National Counterterrorism Center