Shot of Vampire XK632 (VG), pilot asks corporal to open panel in tail boom due to rattle. Pilot reminisces about a pilot on a previous squadron who was lost after a bolt dropped into the cockpit of a Vampire from the hangar roof which was undergoing repair. Scene of Vampire XD558 (Z) in flight. Farmer on tractor in field watches as aircraft "crashes". Back in hangar corporal finds metal tool in tail boom of aircraft. Pilot gets into cockpit and finds a loose strap in cockpit. Corporal gets called over!