21.   No U.S. pilots have been killed.

22.   Still, there are miles of wires in jets and the prospect of an errant shot starting a fire or killing a pilot is a top concern.

23.   The Chinese jet, meanwhile, broke in half, crashing into the sea and presumably killing the pilot.

24.   The crash also killed the pilot and severely injured a nurse and paramedic, whose lawsuits are pending.

25.   The Chinese jet broke up and crashed into the sea, presumably killing the pilot, Wang Wei.

26.   The Germans developed an explosive catapult system in World War II, but the explosion often killed pilots or broke their backs.

27.   The pilot was killed, but the jockeys managed to escape with cuts and bruises and some broken bones, but no life-threatening injuries.

28.   Two of the helicopters have already crashed during training missions, killing two pilots.