he said, no, it's being hijacked. he said, don't think the pilot is flying the plane even now. he said, you ought to call united airlines and let them know, he says, because they may have turned off the equipment that can warn them of a hijacking. and he said, i'll get back to you. >> the controller responsible for flight 175 was looking for the already-crashed american flight 11. he didn't notice that united 175 had now veered off course. within ten minutes of united 175's hijacking, a third plane, american flight 77, traveling from dulles to los angeles came under attack.