Many times in service and as a civilian. 10 years at the Airborne Test Board as a civilian, if it was to be dropped from any aircraft for testing purposes, I had something to do with it, everything from new parachutes to hummers, motor graders,tanks and everything in between .you would be surprised at what is buried on the drop zones.
Worst aircraft was the Osprey, tight inside and the recovery system was a manual boat winch! There is over a mile of shafts inside that thing, all hydraulics, and no one had the sense to put an hydraulic winch in them!
Quit jumping when I had knee replaced.