James C. Fletcher

James Chipman Fletcher served as the 4th and 7th administrator of NASA, first from April 27, 1971, to May 1, 1977, under presidents Richard Nixon, Gerald Ford and Jimmy Carter, and again from May 12, 1986, to April 8, 1989, under presidents Ronald Reagan and George H. W. Bush. As such, he was responsible for Apollo Moon missions 15, 16, and 17, the early planning of the Space Shuttle program, and later for the shuttle program's recovery and return to flight after the Space Shuttle Challenger accident. Prior to this, he was president of the University of Utah from 1964 to 1971.

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