Parachute fragmentation bombs drift down onto a Japanese airfield during a low-altitude strike by B-25 Mitchell bombers of the 312th Bombardment Group, a Fifth Air Force unit that specialized in devastating low-level attacks against enemy airfields and shipping across the Southwest Pacific. The parachute-retarded 'parafrag' bombs allowed attacking aircraft to skim in at treetop height and escape their own blast radius, a tactic that made the 312th one of the most feared strike units in the Pacific War. Project: 218562