Terrence Wade Wilcutt is a United States Marine Corps officer and a former NASA astronaut. He is a veteran of four Space Shuttle missions. Wilcutt was NASA's Chief of Safety and Mission Assurance, until his retirement from NASA in December 2020.
Richard Noel "Dick" Richards, , is a retired American naval officer and aviator, test pilot, chemical engineer, and a former NASA astronaut. He flew aboard four Space Shuttle missions in the 1980s and 1990s.
Jack Robert Lousma is an American astronaut, aeronautical engineer, retired United States Marine Corps officer, former naval aviator, NASA astronaut, and politician. He was a member of the second crew, Skylab-3, on the Skylab space station in 1973. In 1982, he commanded STS-3, the third Space Shuttle mission. Lousma was inducted into the United States Astronaut Hall of Fame in 1997. He is the last living crew member of both of his spaceflights.
Kent Vernon "Rommel" Rominger is an American former astronaut, former NASA Chief of the Astronaut Office at Johnson Space Center, and a captain in the United States Navy. Rominger holds the Space Shuttle Orbiter flight time record with 1610 hours. He joined ATK Launch Systems Group in 2006 as Vice President of Advanced Programs.
Norman Earl Thagard, is an American scientist and former U.S. Marine Corps officer and naval aviator and NASA astronaut. He is the first American to ride to space on board a Russian vehicle, and can be considered the first American cosmonaut. He did this on March 14, 1995, in the Soyuz TM-21 spacecraft for the Russian Mir-18 mission.
Andrew Michael "Andy" Allen is a retired American astronaut. A former Marine aviator and lieutenant colonel, he worked as a test pilot before joining NASA in 1987. He flew three Space Shuttle missions before retiring in 1997.
David Mathieson Walker, , was an American naval officer and aviator, fighter pilot, test pilot, and a former NASA astronaut. He flew aboard four Space Shuttle missions in the 1980s and 1990s.
Robert Donald Cabana is a former Associate Administrator of the National Aeronautics and Space Administration (NASA), NASA astronaut and non-flight-eligible management astronaut), and is a veteran of four Space Shuttle flights. He served as Chief of the Astronaut Office from 1994 to 1997 and as director of the John F. Kennedy Space Center from 2008 to 2021. He is also a former naval flight officer and naval aviator in the United States Marine Corps.
Kenneth Donald Cameron, , is a retired American naval aviator, test pilot, engineer, U.S. Marine Corps officer, and NASA astronaut.
John Oliver Creighton, , is a former NASA astronaut who flew three Space Shuttle missions.
David Carl Hilmers is a former NASA astronaut who flew four Space Shuttle missions. He was born in Clinton, Iowa, but considers DeWitt, Iowa, to be his hometown. He has two grown sons. His recreational interests include playing the piano, gardening, electronics, spending time with his family, and all types of sports. His parents are deceased. With five academic degrees, he is the second most formally educated U.S. astronaut, behind Story Musgrave with six.
Charles Owen Hobaugh is a former NASA astronaut and a retired U.S. Marine Corps officer. He has had three spaceflights, all of which were Space Shuttle missions to the International Space Station, lasting between 10 and 13 days.
John Michael "Mike" Lounge was an American engineer, a United States Navy officer, a Vietnam War veteran, and a NASA astronaut. A veteran of three Space Shuttle flights, Lounge logged over 482 hours in space. He was a mission specialist on STS-51-I (1985) and STS-26 (1988) and was the flight engineer on STS-35 (1990).
Carlos Ismael Noriega is a Peruvian-American NASA employee, a former NASA astronaut and a retired U.S. Marine Corps lieutenant colonel.
Bryan Daniel O'Connor is a retired United States Marine Corps Colonel and former NASA astronaut. He was inducted into the United States Astronaut Hall of Fame in 2008.
Robert Clyde "Bob" Springer is a retired American astronaut and test pilot who flew as a mission specialist on two NASA Space Shuttle missions in 1989 and 1990. A decorated aviator in the United States Marine Corps, Springer also flew more than 500 combat sorties during the Vietnam War. He has logged over 237 hours in space and 4,500 hours flying time, including 3,500 hours in jet aircraft.
Frederick Wilford "Rick" Sturckow is an engineer, retired United States Marine Corps officer, former NASA astronaut, and commercial spacecraft pilot. Sturckow is a veteran of four Space Shuttle missions. He flew on STS-88 and STS-105 as a pilot and STS-117 and STS-128 as a commander. All four missions docked with the International Space Station, making Sturckow one of three American astronauts to visit the station four times. Sturckow later was assigned to the Johnson Space Center as a CAPCOM. He left NASA in 2013 to become a pilot for Virgin Galactic.
George David "Zambo" Zamka is a former NASA astronaut and United States Marine Corps pilot with over 3500 flight hours in more than 30 different aircraft. Zamka piloted the Space Shuttle Discovery in its October 2007 mission to the International Space Station and served as the commander of mission STS-130 in February 2010.
Randolph James "Komrade" Bresnik is a retired officer in the United States Marine Corps and an active NASA astronaut. A Marine Aviator by trade, Bresnik was selected as a member of NASA Astronaut Group 19 in May 2004. He first launched to space on STS-129, then served as flight engineer for Expedition 52, and as ISS commander for Expedition 53.
Douglas Gerald Hurley is an American engineer, former Marine Corps pilot and former NASA astronaut. He piloted Space Shuttle missions STS-127 and STS-135, the final flight of the Space Shuttle program. He launched into space for the third time as commander of Crew Dragon Demo-2, the first crewed spaceflight from American soil since STS-135 and became, together with Bob Behnken, the first astronaut in history launching aboard a commercial orbital spacecraft. He was also the first Marine to fly the F/A-18 E/F Super Hornet. His call sign is "Chunky", and he was sometimes referred to by this name on the communication loops.
