The first NASA Administrator was Dr. T. Keith Glennan; during his term he brought together the disparate projects in space development research in the US. Daniel Goldin held the post for the longest term (just over 9½ years), and is best known for pioneering the "faster, better, cheaper" approach to space programs. The only person to hold the post twice is James C. Fletcher, who returned to NASA following the Challenger disaster.
The Deputy Administrator of NASA "serves as the agency’s second in command and is responsible to the administrator for providing overall leadership, planning, and policy direction for the agency. represents NASA to the Executive Office of the President,......
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