Paul Scott "Paco" Lockhart is an American aerospace engineer, retired United States Air Force colonel and NASA astronaut, a veteran of two Space Shuttle missions.
Jerry Lynn Ross is a retired United States Air Force officer, engineer, and a former NASA astronaut. Ross is a veteran of 7 Space Shuttle missions, making him the joint record holder for most spaceflights.
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.
Karol Joseph "Bo" Bobko was an American aerospace engineer, U.S. Air Force officer, test pilot, and a USAF and NASA astronaut. Bobko was the first graduate of the U.S. Air Force Academy to travel in space and the first person to fly on a space shuttle on three different missions: STS-6, STS-51-D, STS-51-J.
Daniel Charles Brandenstein is the Executive Vice President and Chief Operating Officer of United Space Alliance. He is a former Naval Aviator, test pilot and NASA astronaut, who flew four Space Shuttle missions. He also served as Chief of the Astronaut Office from 1987 to 1992.
Robert Lee Stewart is a retired brigadier general of the United States Army and a former NASA astronaut.
Robert Donald Cabana is the Associate Administrator of the National Aeronautics and Space Administration (NASA), a NASA astronaut, and 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.
Duane Gene "Digger" Carey is a retired lieutenant colonel in the United States Air Force and a former NASA astronaut. He piloted the space shuttle Columbia on March 1, 2002, during a Hubble Space Telescope servicing mission.
Brian Duffy is a retired U.S. Air Force colonel and a former NASA astronaut. He flew aboard four Space Shuttle missions.
Patrick Graham Forrester is a NASA astronaut, engineer, and former Chief of the Astronaut Office. He is a retired United States Army colonel and Army aviator. He is married and has two children.
Lloyd Blaine Hammond Jr. is a Gulfstream test pilot, a former United States Air Force officer, and a former NASA astronaut. He flew on two Space Shuttle missions.
Frank Lee Culbertson Jr. is an American former naval officer and aviator, test pilot, aerospace engineer, NASA astronaut, graduate of the US Naval Academy, and member of the United States Astronaut Hall of Fame. He served as the commander of the International Space Station for almost four months in 2001 and was the only U.S. citizen not on Earth when the September 11 attacks occurred.
Steven Wayne Lindsey is a retired U.S. Air Force officer and NASA astronaut. Lindsey served as Chief of the NASA Astronaut Office from September 2006 until October 2009.
Carl Joseph Meade is a former NASA astronaut.
Steven Ray Nagel, , was an American astronaut, aeronautical and mechanical engineer, test pilot, and a United States Air Force pilot. In total, he logged 723 hours in space. After NASA, he worked at the University of Missouri College of Engineering as an instructor in its Mechanical and Aerospace Engineering Department.
Rex Joseph Walheim is a retired United States Air Force officer, engineer and NASA astronaut. He flew three Space Shuttle missions, STS-110, STS-122, and STS-135. Walheim logged over 566 hours in space, including 36 hours and 23 minutes of spacewalk (EVA) time. He was assigned as mission specialist and flight engineer on STS-135, the final Space Shuttle mission.
Carl Erwin Walz is a retired NASA astronaut currently working for Orbital Sciences Corporation's Advanced Programs Group as vice president for Human Space Flight Operations. Walz was formerly assigned to the Exploration Systems Mission Directorate at NASA Headquarters in Washington, D.C. He was the Acting Director for the Advanced Capabilities Division in the Exploration Systems Mission Directorate, and was responsible for a broad range of activities to include Human Research, Technology Development, Nuclear Power and Propulsion and the Lunar Robotic Exploration Programs to support the Vision for Space Exploration.
Christopher Joseph "Gus" Loria is a retired United States Marine Corps Colonel and a medically retired NASA astronaut. He was originally scheduled to fly on STS-113 as pilot; however, he was grounded from spaceflight due to a severe back injury.
Ronald John Garan Jr. is a retired NASA astronaut. After graduating from State University of New York College at Oneonta in 1982, he joined the Air Force, becoming a Second Lieutenant in 1984. He became an F-16 pilot, and flew combat missions in Desert Shield and Desert Storm. Before becoming an astronaut he was the Operations Officer of the 40th Flight Test Squadron (FTS). He first flew in space as a mission specialist on the May 2008 STS-124 mission to the International Space Station (ISS). He returned to ISS on April 4, 2011, for a six-month stay as a member of Expedition 27. Garan is a highly decorated former NASA astronaut who flew on the US Space Shuttle, Russian Soyuz, and International Space Station. In total he spent 178 days in space and more than 71 million miles in 2,842 orbits of Earth, 27 hours and 3 minutes of EVA in four spacewalks, and 18 days on the bottom of the ocean during the NEEMO-9 undersea mission.
Benjamin Alvin Drew is a United States Air Force officer and a former NASA astronaut. He has been on two spaceflights; the first was the Space Shuttle mission STS-118 to the International Space Station, in August 2007. Drew's second spaceflight took place in March 2011 on STS-133, another mission to the International Space Station. STS-133 was Space Shuttle Discovery's final mission. Drew took part in two spacewalks while docked to the station. Drew was the final African-American to fly on board a Space Shuttle, as the final two Space Shuttle missions, STS-134 and STS-135, had no African-American crew members.
