With two 20mm cannons, a 40mm automatic grenade launcher, five .50-cal. machine guns, and two weapon pods that could carry either 70mm rocket launchers or 7.62mm miniguns, the armored ACH-47A Chinook could fly into the teeth of enemy resistance and fly back out as the only survivor. The aircraft boasted overlapping fields of fire and 360-degree coverage.
Operating under the call sign “Guns-A-Go-Go,” these behemoths were part of an experimental program during Vietnam to create heavy aerial gunships to support ground troops.