Courtesy of Wikipedia
Hans Michael Mark (June 17, 1929 – December 18, 2021) was a German-born American government official who served as Secretary of the Air Force and as a Deputy Administrator of NASA. He was an expert and consultant in aerospace design and national defense policy.
Mark retired from the Department of Aerospace Engineering and Engineering Mechanics at the University of Texas at Austin’s Cockrell School of Engineering in July 2014.
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