How One B 24 Gunner's 'Stupid' Ammo Trick Made Him Deadliest in the Pacific Discover how a world-class marksman turned into the deadliest bomber gunner in the Pacific by defying a "safety" regulation that was secretly getting American airmen killed. Technical Sergeant Arthur Benko, a competitive shooter before the war, realized that the standard US Army Air Forces requirement to load every fifth round as a "tracer" was a lethal mistake. While tracers helped gunners see their stream of fire, they