On September 10 , 2001 , Hazmi , along with Mihdhar and Hanjour checked into a hotel in Herndon , Virginia . The next morning , Hazmi and four other terrorists , boarded American Airlines Flight 77 at Dulles Airport and hijacked the plane so that Hani Hanjour could pilot and crash the plane into the Pentagon as part of the September 11 attacks . The crash killed all 64 passengers aboard the aircraft and 125 in the Pentagon . Hazmi was initially dismissed as a " muscle hijacker " following the attacks , but was later revealed to have played a larger role in the operational planning than previously believed . His younger brother , Salem al-Hazmi , was another of the hijackers aboard the same flight
September 11 attacks
September 11 attacks
Nawaf al-Hazmi