`` Cardiff '' , on the lookout Patrolling for aircraft flying supplies to the Argentine forces occupying Control the Falkland Islands , had misidentified Check the helicopter as an enemy C-130 Hercules .

the pilots of two united states air force ( usaf ) f-15 fighter aircraft , operating under the control of a usaf airborne warning and control system ( awacs ) aircraft , misidentified Check two united states army uh-60 black hawk helicopters as iraqi mil mi-24 `` hind '' helicopters .