O'Brien has become notable due to a pair of significant involvements on 9/11 , when he and his crew flew close , in space and time , to the crashes of two of the four airliners hijacked that day : American Airlines Flight 77 and United Airlines Flight 93 . The former hit the Pentagon , while the latter later crashed in a field in western Pennsylvania
American Airlines Flight 77
American Airlines Flight 77
Steven O'Brien (pilot)