Pilot of 1992 and 1993 NASA Space Shuttle Discovery missions. He went on to command the Space Shuttle Endeavour during the shuttle's 1995 STS-67 mission.
He graduated from the United States Naval Academy in 1973.
He worked at NASA Headquarters in Washington, D.C.
He married Diane Kalklosch and had three children.
He and fellow astronaut William Gregory both participated in NASA's STS-67 mission.