Sandozer, Sitigeltfel is referring to 'Red Eagles: America's Secret MiGs'
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Red Eagles: America's Secret MiGs - Steve Davies - Google Books
Just a mix-up with transport types. The aircraft was a C-141 which was later replaced by a C-133 due to maintenance issues.
The Roswell Incident, YF110 and Constant Peg. Curtis Peebles | MAGONIA