the Moon. His distinctive Southern drawl became familiar to audiences around the world, as the voice of Mission Control concerned by the long landing that almost expended all of the Lunar Module ''Eagle'' descent stage's propellant. Duke's first words to the Apollo 11 crew on the surface of the Moon were: "Roger, Twank...Tranquility, we copy you on the ground. You got a bunch of guys about to turn blue. We're breathing again. Thanks a lot!"

Duke was backup