Donald Holmquest Status: Retired 4/7/1939 – Nationality: American Type: Government Agency: National Aeronautics and Space Administration Donald Lee Holmquest (born April 7, 1939) is an American lawyer, as well as a physician, electrical engineer and former NASA astronaut. Holmquest was selected as a scientist-astronaut by NASA in August 1967. From May 1971 to September 1973, he completed training in nuclear medicine at Baylor while on two leaves from NASA. When it became clear that he would not be assigned to any Skylab mission after Skylab B was scrapped, he formally resigned from the Astronaut Corps in September 1973.