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 united 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. steven push's wife, lisa raines,