The Aircraft
The Douglas C-133 Cargomaster was the only turboprop powered strategic airlifter for the US Air Force. The 50 C-133s in service were built from 1956 to 1960. They were designed to carry large and heavy cargo and were superior to the preceding C-124 Globemaster in that they were faster, easier to load and could carry larger loads. One of the duties of the C-133 was delivery of strategic missiles, the Atlas, Titan, and Minuteman, being faster and safer than over the road. C-133s also delivered Atlas, Titan, and Saturn missiles to the launch pads for the Mercury, Gemini, and Apollo programs.
When the C-5 came out in 1971, the C-133s were quickly taken off inventory, as most of them had reached their service limits for hours flown.