On September 10, 2001, Hanjour, Mihdhar, and Nawaf checked into the Marriott Residence Inn in Herndon, Virginia where Saleh Ibn Abdul Rahman Hussayen, a prominent Saudi government official, was staying - although no evidence was ever uncovered that they had met, or knew of each other's presence [REF].
On September 11, Hazmi boarded American Airlines Flight 77.