They're called "jumpseaters": employees who take free rides on company plane trips for personal reasons. On April 7, 1994, FedEx Flight Engineer Auburn Calloway had a very specific reason to hop aboard. He wanted to crash the plane to the ground. This is the violent and desperate life-or-death fight between Calloway and the three-man crew on FedEx Flight 705 and how one pilot used the aircraft itself to immobilize the attacker.