William George "Borneo" Gregory is an American retired NASA astronaut and United States Air Force lieutenant colonel.

Charles Joseph Precourt is a retired NASA astronaut. His career in flight began at an early age, and spans his entire lifetime. He served in the US Air Force, piloted numerous jet aircraft, and piloted and commanded the Space Shuttle. Notably, he piloted or commanded several missions which involved docking with the Russian Mir space station and was heavily involved in Russian/US Space relations as well as the International Space Station collaboration. He retired from the USAF with the rank of Colonel.

Richard Alan Searfoss was an American aviator who was United States Air Force colonel, NASA astronaut and test pilot.

Terrence Wade Wilcutt is a United States Marine Corps officer and a NASA astronaut. He is a veteran of four Space Shuttle missions. Wilcutt is currently the Director of Safety and Mission Assurance, Johnson Space Center.

Daniel Wheeler Bursch is a former NASA astronaut, and Captain of the United States Navy. He had four spaceflights, the first three of which were Space Shuttle missions lasting 10 to 11 days each. His fourth and final spaceflight was a long-duration stay aboard the International Space Station as a crew member of Expedition 4, which lasted from December 2001 to June 2002. This 196-day mission set a new record for the longest duration spaceflight for an American astronaut, a record simultaneously set with his crew mate Carl Walz. Their record has since been broken, and as of 2016 it is held by Scott Kelly, who flew a 340 day mission during Expeditions 43, 44 and 45.

Leroy Chiao is a Chinese-American engineer, former NASA astronaut, entrepreneur, motivational speaker, and engineering consultant. Chiao flew on three Space Shuttle flights, and was the commander of Expedition 10, where he lived on board the International Space Station from October 13, 2004 to April 24, 2005. He is also a co-author and researcher for the Advanced Diagnostic Ultrasound in Microgravity project.

Michael Richard Uram "Rich" Clifford is a former United States Army officer and NASA astronaut. Clifford is considered a Master Army Aviator and has logged over 3,400 hours flying in a wide variety of fixed and rotary winged aircraft. Clifford retired from the U.S. Army at the rank of lieutenant colonel. He has logged over 12 hours of spacewalk time over three Space Shuttle missions. He is also one of the first people to conduct a spacewalk while docked to an orbiting space station. The spacewalk was conducted during STS-76, while docked at the Russian space station Mir.

Nancy Jane Currie-Gregg is an engineer, United States Army officer and a NASA astronaut. Currie-Gregg has served in the United States Army for over 22 years and holds the rank of colonel. With NASA, she has participated in four space shuttle missions: STS-57, STS-70, STS-88, and STS109, accruing 1,000 hours in space. She currently holds an appointment as an adjunct associate professor in the Department of Industrial & Systems Engineering at Texas A&M University.

Thomas David Jones is a former United States astronaut. He was selected to the astronaut corps in 1990 and completed four space shuttle flights before retiring in 2001. He flew on STS-59 and STS-68 in 1994, STS-80 in 1996 and STS-98 in 2001. His total mission time was 53 days 48 minutes. He works as a planetary scientist, space operations consultant, astronaut speaker, and author.

William Surles McArthur Jr. is a retired United States Army colonel and NASA astronaut and a veteran of three Space Shuttle missions and one expedition to the International Space Station via the Russian Soyuz capsule.

James Hansen Newman, Ph.D. is an American physicist and a former NASA astronaut who flew on four Space Shuttle missions.

Ellen Ochoa is an American engineer, former astronaut and the current Director of the Johnson Space Center. Ochoa became director of the center upon the retirement of the previous director, Michael Coats, on December 31, 2012. In 1993 Ochoa became the first Hispanic woman in the world to go to space when she served on a nine-day mission aboard the shuttle Discovery.