I was very lucky last week, meeting an elderly Spanish gentleman who used to be a paratrooper, but who was now restoring the Junkers Ju-52/3m that he used to parachute out of. He invited me to see the restoration project, and I have loads of photos of the airplane, both inside and outside. The aircraft had two gun turrets and a bomb bay! The biggest impression, however, was how thin the corrugated aluminium skin really is. My guesstimate would be 0.8mm (1/32″). Anyway, it was a privilege talking to this man, and hearing about the aircraft and his life as a paratrooper after the war. Great stuff!