Brian Duffy is a retired U.S. Air Force colonel and a former NASA astronaut. He flew aboard four Space Shuttle missions.

Stephen Scot Oswald is a former NASA astronaut.

Stephen Douglas Thorne was an American naval officer and aviator, test pilot and a NASA astronaut candidate. He was born on February 11, 1953, in Frankfurt, West Germany, and graduated from the U.S. Naval Academy in 1975. He was a Navy fighter pilot from 1976 until he became a test pilot in 1981. He was accepted for NASA astronaut training in June 1985, but died in an airplane accident where he was a passenger on May 24, 1986.

Charles Donald "Sam" Gemar is an American former astronaut with NASA and a lieutenant colonel in the United States Army. Gemar has flown on three Space Shuttle missions (STS-38, STS-48 and STS-62). Gemar has completed 385 orbits of the Earth and over 581 hours in space. He has also served in different positions in NASA, including as a CAPCOM for Shuttle missions. Gemar was the first astronaut to be born in the state of South Dakota.

Linda Maxine Godwin Ph.D. is an American scientist and retired NASA astronaut. Godwin joined NASA in 1980 and became an astronaut in July 1986. She retired in 2010. During her career, Godwin completed four space flights and logged over 38 days in space. Godwin also served as the Assistant to the Director for Exploration, Flight Crew Operations Directorate at the Johnson Space Center. Since retiring from NASA, she accepted the position of Professor in the Department of Physics and Astronomy at the University of Missouri.

Tamara Elizabeth "Tammy" Jernigan, Ph.D. is an American scientist and former NASA astronaut and a veteran of five shuttle missions.

Carl Joseph Meade is a former NASA astronaut.

Pierre Joseph Thuot is a retired United States Navy Captain and NASA astronaut. He went into space three times, spending over 650 hours in space, including over 15 hours in three space walks. He is a former U.S. record holder for time spent on one space walk, and participated in the first three-person space walk.

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.

Kenneth Dwane "Sox" Bowersox is a United States Navy officer, and a former NASA astronaut. He is a veteran of five Space Shuttle launches and an extended stay aboard the International Space Station. When he launched on STS-73 at the age of 38 years and 11 months, he became the youngest person ever to command a Space Shuttle vehicle.

Curtis Lee "Curt" Brown Jr. is a former NASA astronaut and retired United States Air Force colonel.

Kevin Patrick "Chilli" Chilton is an American mechanical engineer, and former United States Air Force four-star General and test pilot. His last assignment was as Commander, U.S. Strategic Command from October 3, 2007 to January 28, 2011. Prior to his appointment to general officer ranks, Chilton spent 11 years of his military career as a NASA astronaut. He retired from the Air Force on February 1, 2011, after having achieved the highest rank of any military astronaut. On January 30, 2012, General Chilton was named to the board of directors of Orbital Sciences Corporation.