My dad was a gunner in a Huey before reupping and becoming a crew chief on a Chinook for 2 further tours.I think he was 101st Airborne turned Air Assault , so he had both patches, 200 bn Headquarters Supply, the fleet was called "Flying Pachederms" with an elephant on the rear rotor mastand his usual was called "Up, Up; and Away", with some balloons painted by the door.....any ways they had various weapons, M-60's, sometimes mini guns, and the occasional 50cal "Stingers" on the back ramp. He was stationed mostly at Eagle Beach near Danag and Hue. 1967-71 I think. He also mentiond that for a short time he help arm and clean other Chinooks that were called "Guns a Go Go" ........... Chinooks up armored with cannons, .50's and an auto grenade launcher..........outfitted with all kinds of weapons, in a different outfit, but stationed next to them on the beach.
Ever notice R.Lee Ermy "Gunny" was the pilot of the Huey bringin' Duval and Sheen to the beach?