Apollo 13
Flight of Apollo 13
Flight controller John Aaron, along with Mattingly and several engineers and designers, devised a procedure for powering up the command module from full shutdown – something never intended to be done in flight, much less under Apollo 13's severe power and time constraints. The astronauts implemented the procedure without apparent difficulty: Kranz later credited the fact that all three astronauts had been test pilots, accustomed to having to work in critical situations with their lives on the line, for their survival.
Apollo 13-52