50-Year Retrospective: The Flights of Apollo, Apollo 10 – The Dress Rehearsal
Apollo 9's successful tests in orbit led to launching a complete Apollo "stack" to lunar orbit for practice operations with two manned ships.
The mission would take Commander Tom Stafford and Lunar Module Pilot Gene Cernan down to within 10 miles of the Moon's surface in a dress rehearsal for the first lunar landing, while Command Module Pilot John Young flew solo.
A few harrowing moments at a critical point led to some salty language from Cernan on an open mic, an unintentional NASA "first."
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