Who was the director of NASA when a United States Marine Corps aviator circled the Earth three times?
D. Brainerd Holmes Dyer Brainerd Holmes (May 24, 1921 – January 11, 2013), known professionally as D. Brainerd Holmes, was an American engineer and business executive. He was perhaps best known for directing NASA's manned spaceflight program from September 1961 to June 1963, when John Glenn made the pivotal first US orbital spaceflight, but Holmes was also the president of international defense contractor Raytheon. He retired from that post in 1986.
Eberhard Rees Eberhard Friedrich Michael Rees (April 28, 1908 – April 2, 1998) was a German-American (by becoming a naturalized citizen of the United States) rocketry pioneer and the second director of NASA's Marshall Space Flight Center.