November 1971, (from left to right) Astronauts John Young, Eugene Cernan, Charles Duke, Fred Haise, Anthony England, Charles Fullerton, and Donald Peterson await deployment tests of the Lunar Roving Vehicle (LRV) qualification test unit in Building 4649 at the Marshall Space Flight Center (MSFC).
April 11, 1970, Apollo 13 lifted off with Cdr Jim Lovell, CM Pilot Jack Swigert and LM Pilot Fred Haise. Two days later an oxygen tank exploded, scrubbing the lunar landing and putting the crew in jeopardy. The crew used their lunar module as a "lifeboat," and even rigged an adapter so than a command module "air scrubber" would work in the lunar module, preventing a dangerous buildup of carbon dioxide. The mission ended safely when the crew splashed down on April 17, 1970