Frederick D. Gregory

Frederick Drew Gregory (born January 7, 1941), (Col, USAF, Ret.), is a former United States Air Force pilot, military engineer, test pilot, and NASA astronaut as well as former NASA Deputy Administrator. He also served briefly as NASA Acting Administrator in early 2005, covering the period between the departure of Sean O’Keefe and the swearing in of Michael Griffin.

Nationality: American

Status: Retired

Born: January 7, 1941

Time in space: 18d 23h 04m

Selection: 1978 NASA Group 8

Missions: STS-51-B, STS-33, STS-44

Source: Wikipedia