Operation Deep Freeze: US Navy R4D-5L.
And they almost didn't make it back out.
50 Years of USAF Airlift in Antarctica: 1956 - 2006.
Sputnik 1, Спутник-1, Satellite 1, sometimes referred to as simply Sputnik, was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for three weeks before its three silver-zinc batteries became depleted. Aerodynamic drag caused it to fall back into the atmosphere on 4 January 1958.
