The Apollo 11 LEM's landing site turned out to be strewn with boulders,
link and Neil Armstrong had to take manual control of the landing; he maneuvered the LEM to
link a safe landing site and touched down with less than a minute's worth of
link fuel remaining. Flight controller Charles Duke radioed, "Tranquility [Tranquility Base was the name of the final landing site] we copy you on the ground. You got a bunch of guys about to turn blue. We're breathing again. Thanks a lot."