United States Air Force astronauts

Joe Henry Engle (born August 26, 1932) is an American pilot, aeronautical engineer and former NASA astronaut. He was the commander of two Space Shuttle missions including STS-2 in 1981, the program's second orbital flight. He also flew two flights in the Shuttle program's 1977 Approach and Landing Tests. Engle is one of twelve pilots who flew the North American X-15, an experimental spaceplane jointly operated by the Air Force and NASA, and the last surviving test pilot of the aircraft. After Richard H. Truly died In 2024, Engle is now the last surviving crew member of STS-2.
As an X-15 pilot, Engle made three flights above 50 miles, thus qualifying for astronaut wings under the American convention for the boundary of space. In 1966 he was selected for NASA's 5th Astronaut Group, joining the Apollo program. He was backup Lunar Module Pilot (LMP) for Apollo 14 and originally scheduled as LMP for Apollo 17. However, cancellation of later flights prompted NASA to select geologist-astronaut Harrison Schmitt as LMP, displacing Engle.

Edward Higgins White II (November 14, 1930 – January 27, 1967) was an American aeronautical engineer, United States Air Force officer, test pilot, and NASA astronaut. He was a member of the crews of Gemini 4 and Apollo 1.
After graduating from West Point in 1952 with a Bachelor of Science degree, White was sent to flight training, and assigned to the 22nd Fighter Day Squadron at Bitburg Air Base, West Germany, where he flew the F-86 Sabre and F-100 Super Sabre fighters. In 1958, he enrolled in the University of Michigan to study aeronautical engineering, receiving his Master of Science degree in 1959. White then received test pilot training at Edwards Air Force Base, California, before being assigned as a test pilot for the Aeronautical Systems Division at Wright-Patterson Air Force Base, Ohio.
White was selected as one of the second group of astronauts, the so-called "Next Nine", who were chosen to take part in the Gemini and Apollo missions. He was assigned as pilot of Gemini 4 alongside command pilot James McDivitt. On June 3, 1965, White became the first American to walk in space. He was then assigned as senior pilot of the first crewed Apollo mission, Apollo 1. White died on January 27, 1967, alongside astronauts Virgil "Gus" Grissom and Roger B. Chaffee in a fire during pre-launch testing for Apollo 1 at Cape Canaveral, Florida. He was awarded the NASA Distinguished Service Medal for his flight in Gemini 4 and was then awarded the Congressional Space Medal of Honor posthumously.

Francis Richard Scobee (May 19, 1939 – January 28, 1986) was an American pilot, engineer, and astronaut. He was killed while commanding the Space Shuttle Challenger in 1986, which suffered catastrophic booster failure during launch of the STS-51-L mission.Scobee held a Bachelor of Science degree in Aerospace Engineering, graduating from the University of Arizona in 1965. He was a reciprocating engine mechanic for the United States Air Force and served as a combat aviator in the Vietnam War.
Selected for NASA Astronaut Corps in January 1978, Scobee completed his training in August 1979. While awaiting his first orbital spaceflight mission, Scobee served as an instructor pilot for the Shuttle's 747 carrier aircraft. In April 1984, he piloted Challenger mission STS-41-C, which successfully deployed one satellite and repaired another.

Charles Moss Duke Jr. (born October 3, 1935) is an American former astronaut, United States Air Force (USAF) officer and test pilot. As Lunar Module pilot of Apollo 16 in 1972, he became the 10th and youngest person to walk on the Moon, at age 36 years and 201 days.A 1957 graduate of the United States Naval Academy, Duke joined the USAF and completed advanced flight training on the F-86 Sabre at Moody Air Force Base in Georgia, where he was a distinguished graduate. After completion of this training, Duke served three years as a fighter pilot with the 526th Fighter-Interceptor Squadron at Ramstein Air Base in West Germany. After graduating from the Aerospace Research Pilot School in September 1965, he stayed on as an instructor teaching control systems and flying in the F-101 Voodoo, F-104 Starfighter, and T-33 Shooting Star.
In April 1966, Duke was one of nineteen men selected for NASA's fifth astronaut group. In 1969, he was a member of the astronaut support crew for Apollo 10. He served as CAPCOM for Apollo 11, the first crewed landing on the Moon. His distinctive Southern drawl became familiar to audiences around the world, as the voice of Mission Control concerned by the long landing that almost expended all of the Lunar Module Eagle descent stage's propellant. Duke's first words to the Apollo 11 crew on the surface of the Moon were "Roger, Twank...Tranquility, we copy you on the ground. You got a bunch of guys about to turn blue. We're breathing again. Thanks a lot!"
Duke was backup lunar module pilot on Apollo 13. Shortly before the mission, he caught rubella (German measles) from a friend's child and inadvertently exposed the prime crew to the disease. As Ken Mattingly had no natural immunity to the disease, he was replaced as command module pilot by Jack Swigert. Mattingly was reassigned as command module pilot of Duke's flight, Apollo 16. On this mission, Duke and John Young landed at the Descartes Highlands, and conducted three extravehicular activities (EVAs). He served as backup lunar module pilot for Apollo 17. Duke retired from NASA on January 1, 1976.
Following his retirement from NASA, Duke entered the Air Force Reserve and served as a mobilization augmentee to the Commander, USAF Basic Military Training Center, and to the Commander, USAF Recruiting Service. He graduated from the Industrial College of the Armed Forces in 1978. He was promoted to brigadier general in 1979, and retired in June 1986. He has logged 4,147 hours' flying time, of which 3,632 hours were in jet aircraft, and 265 hours were in space, including 21 hours and 38 minutes of EVA.

James Benson "Jim" Irwin (March 17, 1930 – August 8, 1991) was an American astronaut, aeronautical engineer, test pilot, and a United States Air Force pilot. He served as Lunar Module pilot for Apollo 15, the fourth human lunar landing. He was the 8th person to walk on the Moon and the first, and youngest, of those astronauts to die.