I once jumped from a Rocket Patrol rocket ship once. https://www.mecum.com/lots/FL0117-276539/rocket-patrol-coin-op-kiddie-ride-rocket-spaceship/
The largest para airborne assault during the Vietnam War was Operation Junction City. Before my time, I was a junior in high school when it took place in Feb / March of 67. The Army paratroopers were used as one of the three blocking forces. Picture a U The left and right of the U were blocking forces of light infantry that were deployed by helicopters and the bottom of the U was the third blocking force where Army 173rd Air Borne Brig. paratroopers landed. At the opening of the top of the U is where the main assault of mechanized infantry came from. Inside of the U was the 9th "main force" VC Division. Charley was trapped with no where to go. C-130's were used.
Never jumped in the military, was never in it. No idea what type of plane it was I did jump from, whatever they usually use to take people up I guess.