“…the CIA learned that [future 9/11 hijacker Nawaf al-] Hazmi had flown to Los Angeles on January 15, 2000. Had it checked the flight manifest, it would have noticed that [fellow hijacker] Khaled al-Mihdhar was traveling with him. The agency neglected to inform either the FBI or the State Department that at least one well-known al-Qaeda operative was in the country.”
– Lawrence Wright, The Looming Tower, Page 352