Marshall Space Flight Center public affairs officer, Brian Massey, interviews Gregory Johnson, NASA's Super Guppie pilot, after the arrival of the aircraft to ferry the Orion stage adapter to Denver, Colorado for further testing.

S98-16776 (October 1998) --- Astronaut Gregory C. Johnson, pilot.

JSC2006-E-11466 (19 Jan. 2006) --- Astronaut Gregory C. Johnson, pilot

JSC2008-E-000184 (24 Oct. 2007) --- NASA astronaut Gregory H. Johnson, pilot. Photo credit: NASA or National Aeronautics and Space Administration

S125-E-009943 (18 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, exercises on the bicycle ergometer on the middeck of the Earth-orbiting Space Shuttle Atlantis.

S125-E-012525 (19 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, floats on the middeck of the Earth-orbiting Space Shuttle Atlantis during flight day nine activities.

S125-E-012523 (19 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, floats through a hatch on the middeck of the Earth-orbiting Space Shuttle Atlantis during flight day nine activities.

S125-E-009925 (18 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, is pictured on the middeck of the Earth-orbiting Space Shuttle Atlantis during flight day eight activities.

S125-E-012366 (20 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, rests in his sleeping bag on the flight deck of the Earth-orbiting Space Shuttle Atlantis at the end of flight day 10.

S125-E-013369 (21 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, uses a vacuum cleaner to remove dust particles from the air filter system on the flight deck of Space Shuttle Atlantis.

JSC2009-E-084158 (16 April 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, flies a Shuttle Training Aircraft (STA) over Edwards Air Force Base, California, during a training session.

JSC2009-E-084157 (16 April 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, flies a Shuttle Training Aircraft (STA) over Edwards Air Force Base, California, during a training session.

S125-E-013040 (21 May 2009) --- Occupying the commander?s station, astronaut Gregory C. Johnson, STS-125 pilot, uses the Portable In-Flight Landing Operations Trainer (PILOT) on the flight deck of the Earth-orbiting Space Shuttle Atlantis. PILOT consists of a laptop computer and a joystick system, which helps to maintain a high level of proficiency for the end-of-mission approach and landing tasks required to bring the shuttle safely back to Earth.

S125-E-013042 (21 May 2009) --- Occupying the commander?s station, astronaut Gregory C. Johnson, STS-125 pilot, uses the Portable In-Flight Landing Operations Trainer (PILOT) on the flight deck of the Earth-orbiting Space Shuttle Atlantis. PILOT consists of a laptop computer and a joystick system, which helps to maintain a high level of proficiency for the end-of-mission approach and landing tasks required to bring the shuttle safely back to Earth. Astronaut Scott Altman, commander, looks on.

S125-E-011899 (19 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, is pictured on the aft flight deck of the Earth-orbiting Space Shuttle Atlantis during flight day nine activities. A portion of the Hubble Space Telescope and Earth?s horizon are visible through the overhead windows.

S125-E-013038 (21 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, occupies the commander?s station on the flight deck of the Earth-orbiting Space Shuttle Atlantis during flight day 11 activities.

Prince Philip, left, asks astronauts K. Megan McArthur, Commander Scott D. Altman and Gregory C. Johnson, pilot details about the STS-125 mission. Photo Credit: (NASA/Chris Gunn)

S125-E-009638 (18 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, is pictured on the flight deck of the Earth-orbiting Space Shuttle Atlantis during flight day eight activities.

Prince Philip greets astronauts from STS-125 L to R Andrew J Feustel, Michael T Goode, K. Megan McArthur, Michael J. Massimino, Gregory C. Johnson, and Commander Scott D. Altman. Photo Credit: (NASA/Chris Gunn)

Jeffrey Rudolph, President and CEO, California Science Center speaks at the Endeavour Kick-Off Ceremony at The Forum in Inglewood, Saturday, Oct. 13, 2012. Behind him are seen Hildreth Walker, Founder of A-Man Inc. STEM International Science Center, far left; James T. Butts, Jr., Mayor of Inglewood; NASA astronauts Michael Fincke and Gregory Johnson, far right. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Beginning Oct. 30, the shuttle will be on display in the CSC’s Samuel Oschin Space Shuttle Endeavour Display Pavilion, embarking on its new mission to commemorate past achievements in space and educate and inspire future generations of explorers. Photo Credit: (NASA/Carla Cioffi)

STS-125 shuttle mission crew members, from left, Scott Altman, Gregory Johnson, Megan McArthur, Andrew Feustel, John Grunsfeld, Michael Good and Michael Massimino, give a presentation at the NASA Tweetup event held at NASA Headquarters, July 21, 2009 in Washington. Nearly 200 of NASA's Twitter followers are in attendance, which featured a presentation and a question and answer session with the crew of the STS-125 shuttle mission to repair the Hubble Space Telescope. Photo Credit: (Carla Cioffi)

From left to right are seen Apollo 7 astronaut Walter Cunningham (second from right), NASA astronaut Kay Hire, Hildreth Walker, Founder of A-MAN Inc. STEM International Science Center; NASA astronauts Michael Fincke and Gregory Johnson at the Endeavour Kick-Off Ceremony, Saturday, Oct. 13, 2012 in Inglewood. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Beginning Oct. 30, the shuttle will be on display in the CSC’s Samuel Oschin Space Shuttle Endeavour Display Pavilion, embarking on its new mission to commemorate past achievements in space and educate and inspire future generations of explorers. Photo Credit: (NASA/Carla Cioffi)

STS-125 crew members from left, Commander Scott Altman, Pilot Gregory Johnson, Mission Specialist Michael Good, Mission Specialist Megan McArthur, Mission Specialist John Grunsfeld, Mission Specialist Michael Massimino and Mission Specialist Andrew Feustel, are seen during a press conference, Wednesday, Sept. 9, 2009, after astronomers declared the NASA's Hubble Space Telescope a fully rejuvenated observatory with the release Wednesday of observations from four of its six operating science instruments at NASA Headquarters in Washington. Photo Credit: (NASA/Paul E. Alers)

JOHNSON SPACE CENTER, Houston, Texas --- JSC2006-E-11466 -- Astronaut Gregory C. Johnson, pilot

JOHNSON SPACE CENTER, HOUSTON -- JSC2008-E-000184-- Astronaut Gregory H. Johnson, pilot

Jazz pianist and singer Diana Krall holds a montage given to her by the STS-125 space shuttle crew along with Apollo 11 Astronaut Neil Armstrong at the Apollo 40th anniversary celebration held at the National Air and Space Museum, Monday, July 20, 2009 in Washington. From left, Michael J. Massimino, Michael T. Good, Gregory C. Johnson, Andrew J. Feustel, Krall, Scott D. Altman, Neil Armstrong, John M. Grunsfeld and Megan McArthur. Photo Credit: (NASA/Bill Ingalls)

JOHNSON SPACE CENTER, Houston --- JSC2008-E-001967 --- Astronaut Gregory E. Chamitoff, flight engineer

JSC2008-E-035360 (17 April 2008) --- Astronaut Gregory C. Johnson, STS-125 pilot, prepares for a flight in a NASA T-38 trainer jet at Ellington Field near NASA's Johnson Space Center.

JSC2008-E-035366 (17 April 2008) --- Astronaut Gregory C. Johnson, STS-125 pilot, prepares for a flight in a NASA T-38 trainer jet at Ellington Field near NASA's Johnson Space Center.

JSC2009-E-087196 (23 April 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, is pictured during a STS-125 preflight press briefing at NASA's Johnson Space Center.

JSC2011-E-017047 (27 July 2010) --- NASA astronaut Gregory H. Johnson, pilot. Photo credit: NASA or National Aeronautics and Space Administration

JSC2010-E-024581 (11 Feb. 2010) --- NASA astronauts Mark Kelly (left), STS-134 commander; and Gregory H. Johnson, pilot, attired in training versions of their shuttle launch and entry suits, prepare for a training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.

S123-E-006273 (15 March 2008) --- Astronauts Peggy Whitson and Gregory H. Johnson peer out of the Node 2, Harmony, during a brief break onboard the International Space Station. Whitson is in the midst of a long-term stay on ISS as Expedition 16 commander. Johnson is the STS-123 crew's pilot of Endeavour.

JSC2008-E-018325 (27 Feb. 2008) --- Astronaut Gregory C. Johnson, STS-125 pilot, dons a training version of his shuttle launch and entry suit in preparation for a training session in the Space Vehicle Mockup Facility at Johnson Space Center.

JSC2008-E-018320 (27 Feb. 2008) --- Attired in a training version of his shuttle launch and entry suit, astronaut Gregory C. Johnson, STS-125 pilot, awaits the start of a training session in the Space Vehicle Mockup Facility at Johnson Space Center.

JSC2010-E-024601 (11 Feb. 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, attired in a training version of his shuttle launch and entry suit, is pictured during a training session in the Space Vehicle Mockup Facility at NASA's Johnson Space Center.

JSC2007-E-113868 (19 Dec. 2007) --- Astronauts Michael J. Massimino (seated), STS-125 mission specialist; and Gregory H. Johnson, STS-123 pilot, pose for a photo in the motion-base shuttle mission simulator (SMS) in the Jake Garn Simulation and Training Facility at the Johnson Space Center.

JSC2010-E-119533 (25 Aug. 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, is pictured in the check-out facility at Ellington Field near NASA's Johnson Space Center prior to a familiarization flight in NASA T-38 trainer jets. Photo credit: NASA or National Aeronautics and Space Administration

JSC2008-E-006896 (24 Jan. 2008) --- Astronauts John M. Grunsfeld (left), STS-125 mission specialist; Gregory C. Johnson, pilot; and Michael J. Massimino, mission specialist, participate in a food tasting session in the Flight Projects Division Laboratory at the Johnson Space Center.

JSC2010-E-194291 (4 Dec. 2010) --- NASA astronauts Mark Kelly (left) and Gregory H. Johnson, STS-134 commander and pilot, respectively, participate in an ingress/egress training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

JSC2010-E-018527 (3 Feb. 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, gets help with the donning of a training version of his shuttle launch and entry suit in preparation for a training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.

JSC2007-E-113866 (19 Dec. 2007) --- Astronauts Michael J. Massimino (seated), STS-125 mission specialist; and Gregory H. Johnson, STS-123 pilot, pose for a photo in the motion-base shuttle mission simulator (SMS) in the Jake Garn Simulation and Training Facility at the Johnson Space Center.

JSC2010-E-024579 (11 Feb. 2010) --- NASA astronauts Mark Kelly (seated), STS-134 commander; and Gregory H. Johnson, pilot, attired in training versions of their shuttle launch and entry suits, prepare for a training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.

JSC2010-E-018507 (3 Feb. 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, attired in a training version of his shuttle launch and entry suit, is pictured prior to the start of a training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.

JSC2010-E-009599 (13 Jan. 2010) --- NASA astronauts Gregory H. Johnson (left), STS-134 pilot; and Michael Fincke, mission specialist, participate in a training session in the Space Vehicle Mock-up Facility at NASA?s Johnson Space Center.

JSC2010-E-024609 (11 Feb. 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, attired in a training version of his shuttle launch and entry suit, participates in a training session in the crew compartment trainer (CCT-2) in the Space Vehicle Mockup Facility at NASA's Johnson Space Center.

JSC2008-E-008429 (29 Jan. 2008) --- Attired in a training version of his shuttle launch and entry suit, astronaut Gregory C. Johnson, STS-125 pilot, awaits the start of a training session in the Space Vehicle Mockup Facility at Johnson Space Center.

JSC2009-E-122212 (26 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, is pictured at the STS-125 crew return ceremony on May 26, 2009 at Ellington Field near NASA?s Johnson Space Center.

JSC2008-E-047955 (4 June 2008) --- Attired in a training version of his shuttle launch and entry suit, astronaut Gregory C. Johnson, STS-125 pilot, awaits the start of a training session in the Space Vehicle Mockup Facility at NASA's Johnson Space Center.

JSC2009-E-087209 (23 April 2009) --- Astronauts Gregory C. Johnson (partially out of frame at left), STS-125 pilot; Michael Good, Megan McArthur, John Grunsfeld and Mike Massimino, all mission specialists, are pictured during a STS-125 preflight press briefing at NASA's Johnson Space Center.

JSC2010-E-024607 (11 Feb. 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, attired in a training version of his shuttle launch and entry suit, awaits the start of a training session in the crew compartment trainer (CCT-2) in the Space Vehicle Mockup Facility at NASA's Johnson Space Center.

JSC2010-E-043657 (25 March 2010) --- NASA astronauts Gregory H. Johnson, STS-134 pilot; and Shannon Walker (right), Expedition 24/25 flight engineer, participate in a training session in the virtual reality lab in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.

JSC2008-E-035357 (17 April 2008) --- Astronauts Gregory C. Johnson (right), STS-125 pilot, and Michael T. Good, mission specialist, walk to the nearby flight line of NASA T-38 trainer jets at Ellington Field near NASA's Johnson Space Center.

JSC2008-E-035351 (17 April 2008) --- Astronauts Scott D. Altman and Gregory C. Johnson (foreground), STS-125 commander and pilot, respectively, look over their flight plan in the check-out facility at Ellington Field near NASA's Johnson Space Center prior to a flight in NASA T-38 trainer jets.

JSC2010-E-119546 (25 Aug. 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, prepares for a flight in a NASA T-38 trainer jet at Ellington Field near NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

JSC2009-E-122157 (26 May 2009) --- Astronauts Scott Altman (left), STS-125 commander; Gregory C. Johnson, pilot; and Michael Good, mission specialist, are pictured at the STS-125 crew return ceremony on May 26, 2009 at Ellington Field near NASA?s Johnson Space Center.

JSC2010-E-018586 (3 Feb. 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, attired in a training version of his shuttle launch and entry suit, awaits the start of a training session in the Space Vehicle Mock-up Facility at NASA?s Johnson Space Center.

S125-E-007729 (15 May 2009) --- Astronaut Gregory C. Johnson, SS-125 pilot, scribbles a note on Atlantis' flight deck while two of crewmates perform a space walk to work on the Hubble Space Telescope.

JSC2006-E-47126 (31 Oct. 2006) --- Astronaut Gregory C. Johnson, STS-125 pilot for the newly announced final shuttle crew to visit and work on the Hubble Space Telescope.

S123-E-008341 (21 March 2008) --- Astronaut Gregory H. Johnson, STS-123 pilot, is pictured in the Pirs Docking Compartment of the International Space Station while Space Shuttle Endeavour is docked with the station.

JSC2011-E-017044 (27 July 2010) --- NASA astronaut Gregory H. Johnson, pilot. Photo credit: NASA or National Aeronautics and Space Administration [alternate portrait]

S125-E-006645 (13 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, occupies the commander?s station on the flight deck of Space Shuttle Atlantis during flight day three activities.

S125-E-006489 (12 May 2009) --- Astronaut Gregory C. Johnson, pilot, helps with unpacking chores on Atlantis? mid deck during the STS-125 flight?s second day in space.

JSC2011-E-017046 (27 July 2010) --- NASA astronaut Gregory H. Johnson, pilot. Photo credit: NASA or National Aeronautics and Space Administration [alternate portrait]

JSC2011-E-017045 (27 July 2010) --- NASA astronaut Gregory H. Johnson, pilot. Photo credit: NASA or National Aeronautics and Space Administration [alternate portrait]

S123-E-008728 (22 March 2008) --- Astronaut Gregory H. Johnson, STS-123 pilot, uses a computer on the middeck of Space Shuttle Endeavour while docked with the International Space Station.

JSC2011-E-017048 (27 July 2010) --- NASA astronaut Gregory H. Johnson, pilot. Photo credit: NASA or National Aeronautics and Space Administration [alternate portrait]

The STS-134 astronauts from left, European Space Agency's Roberto Vittori, Gregory H. Johnson, pilot; Mark Kelly, commander; Michael Fincke, Greg Chamitoff, and Andrew Feustel all mission specialists, pose for a group photograph shortly after landing onboard the space shuttle Endeavour at the Shuttle Landing Facility (SLF) at Kennedy Space Center, Wednesday, June 1, 2011, in Cape Canaveral, Fla. Endeavour, completing a 16-day mission to outfit the International Space Station, spent 299 days in space and traveled more than 122.8 million miles during its 25 flights. It launched on its first mission on May 7, 1992. Photo Credit: (NASA/Bill Ingalls)

JSC2010-E-024590 (11 Feb. 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, dons a training version of his shuttle launch and entry suit in preparation for a training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. United Space Alliance suit technicians Daniel Palmer (right foreground) and George Brittingham assisted Johnson.

JSC2010-E-051957 (12 April 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, dons a training version of his shuttle launch and entry suit in preparation for a post insertion/de-orbit training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. United Space Alliance suit technician Raymond Cuevas assisted Johnson.

JSC2008-E-008451 (29 Jan. 2008) --- Astronaut Gregory C. Johnson, STS-125 pilot, dons a training version of his shuttle launch and entry suit in preparation for a training session in the Space Vehicle Mockup Facility at Johnson Space Center. United Space Alliance (USA) suit technician Toni Cost-Davis assisted Johnson.

JSC2008-E-008454 (29 Jan. 2008) --- Astronaut Gregory C. Johnson, STS-125 pilot, dons a training version of his shuttle launch and entry suit in preparation for a training session in the Space Vehicle Mockup Facility at Johnson Space Center. United Space Alliance (USA) suit technician Toni Cost-Davis assisted Johnson.

S125-E-009640 (18 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, is photographed by astronaut Mike Massimino (mostly out of frame at left), mission specialist, on the flight deck of the Earth-orbiting Space Shuttle Atlantis during flight day eight activities.

S125-E-007321 (14 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, makes notes on a checklist on the middeck of Space Shuttle Atlantis during flight day four activities. Extravehicular activity (EVA) hardware is visible in the background.

S125-E-011889 (19 May 2009) --- Astronaut Megan McArthur, STS-125 mission specialist, is pictured on the aft flight deck of the Earth-orbiting Space Shuttle Atlantis during flight day nine activities. Astronaut Gregory C. Johnson (partially out of frame), STS-125 pilot, is at left.

S125-E-006610 (13 May 2009) --- Astronauts John Grunsfeld (bottom), STS-125 mission specialist; and Gregory C. Johnson (partially out of frame), pilot, work with lithium hydroxide (LiOH) canisters from beneath Space Shuttle Atlantis' middeck during flight day three activities.

S123-E-006443 (16 March 2008) --- Astronauts Gregory H. Johnson, STS-123 pilot; and Garrett Reisman (partially obscured), Expedition 16 flight engineer, work the controls of the space station's robotic Canadarm2 in the Destiny laboratory of the International Space Station while Space Shuttle Endeavour is docked with the station.

S125-E-009749 (18 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, works with lithium hydroxide (LiOH) canisters from beneath Space Shuttle Atlantis' middeck during flight day eight activities.

S123-E-005942 (13 March 2008) --- NASA astronauts Gregory H. Johnson, STS-123 pilot; and Robert L. Behnken (foreground), mission specialist, work the controls of the station's robotic Canadarm2 in the Destiny laboratory of the International Space Station while Space Shuttle Endeavour is docked with the station.

S125-E-008039 (16 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, uses a still camera at an overhead window on the aft flight deck of Space Shuttle Atlantis during flight day six activities.

S125-E-009752 (18 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, works with lithium hydroxide (LiOH) canisters from beneath Space Shuttle Atlantis' middeck during flight day eight activities.

S125-E-006522 (13 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, occupies the pilot?s station on the flight deck of the Earth-orbiting Space Shuttle Atlantis during flight day three activities.

S125-E-011888 (19 May 2009) --- Astronaut Megan McArthur, STS-125 mission specialist, looks through a window on the aft flight deck of the Earth-orbiting Space Shuttle Atlantis during flight day nine activities. Astronaut Gregory C. Johnson (partially out of frame), STS-125 pilot, is at left.

ISS016-E-033637 (23 March 2008) --- European Space Agency astronaut Leopold Eyharts, STS-123 mission specialist, and astronaut Gregory H. Johnson, pilot, perform work at the robotics work station in the U.S. laboratory, Destiny.

S125-E-007334 (14 May 2009) --- Astronaut Gregory C. Johnson, STS-125 pilot, uses a still camera at an overhead window on the aft flight deck of Space Shuttle Atlantis during flight day four activities.

JSC2010-E-043673 (25 March 2010) --- NASA astronauts Gregory H. Johnson, STS-134 pilot; and Shannon Walker, Expedition 24/25 flight engineer, use the virtual reality lab in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center to train for some of their duties aboard the space shuttle and space station. This type of computer interface, paired with virtual reality training hardware and software, helps to prepare crew members for dealing with space station elements.

JSC2009-E-284901 (15 Dec. 2009) --- NASA astronauts Gregory H. Johnson (left), STS-134 pilot; and Michael Fincke, mission specialist, participate in an EVA Thermal Protection System (TPS) overview training session in the TPS/ Precision Air Bearing Facility in the Space Vehicle Mock-up Facility at NASA?s Johnson Space Center.

JSC2010-E-043662 (25 March 2010) --- NASA astronauts Gregory H. Johnson, STS-134 pilot; and Shannon Walker, Expedition 24/25 flight engineer, use the virtual reality lab in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center to train for some of their duties aboard the space shuttle and space station. This type of computer interface, paired with virtual reality training hardware and software, helps to prepare crew members for dealing with space station elements.

JSC2010-E-024591 (11 Feb. 2010) --- NASA astronaut Gregory H. Johnson (foreground), STS-134 pilot; along with NASA astronaut Michael Fincke (center) and European Space Agency astronaut Roberto Vittori, both mission specialists, attired in training versions of their shuttle launch and entry suits, await the start of a training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.

JSC2010-E-009597 (13 Jan. 2010) --- STS-134 crew members participate in a training session in the Space Vehicle Mock-up Facility at NASA?s Johnson Space Center. Pictured from the left are NASA astronauts Mark Kelly, commander; Andrew Feustel, Michael Fincke, both mission specialists; and Gregory H. Johnson, pilot. Crew trainer Adam Flagan assisted the crew members.

JSC2010-E-087708 (25 May 2010) --- NASA astronaut Gregory H. Johnson (foreground), STS-134 pilot; along with astronauts Greg Chamitoff and Michael Fincke, both STS-134 mission specialists, participate in a food tasting session in the Habitability and Environmental Factors Office at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

JSC2010-E-119534 (25 Aug. 2010) --- NASA astronaut Gregory H. Johnson (second left), STS-134 pilot; along with NASA astronauts Greg Chamitoff (left), Andrew Feustel and European Space Agency astronaut Roberto Vittori, all mission specialists, are pictured in the check-out facility at Ellington Field near NASA's Johnson Space Center prior to a familiarization flight in NASA T-38 trainer jets. Photo credit: NASA or National Aeronautics and Space Administration

JSC2010-E-124272 (8 Sept. 2010) --- NASA astronauts Mark Kelly (background) and Gregory H. Johnson, STS-134 commander and pilot, respectively, attired in training versions of their shuttle launch and entry suits, prepare for a training session in the fixed-base shuttle mission simulator (SMS) in the Jake Garn Simulation and Training Facility at NASA?s Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

JSC2010-E-132399 (16 July 2010) --- NASA astronauts Greg Chamitoff (left), STS-134 mission specialist; and Gregory H. Johnson, pilot, pose for a photo during an emergency scenarios training session in the Space Vehicle Mockup Facility at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration

JSC2010-E-018554 (3 Feb. 2010) --- Attired in training versions of their shuttle launch and entry suits, NASA astronauts Gregory H. Johnson (left), STS-134 pilot; and Michael Fincke (right background), mission specialist; along with European Space Agency astronaut Roberto Vittori, mission specialist, participate in a training session on the flight deck of the Full Fuselage Trainer (FFT) in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.

JOHNSON SPACE CENTER, Houston, Texas - STS134-S-002 --- Attired in training versions of their shuttle launch-and-entry suits, these six astronauts take a break from training to pose for the STS-134 crew portrait. Pictured clockwise are NASA astronauts Mark Kelly (bottom center), commander; Gregory H. Johnson, pilot; Michael Fincke, Greg Chamitoff, Andrew Feustel and European Space Agency's Roberto Vittori, all mission specialists.

JSC2010-E-051955 (12 April 2010) --- European Space Agency astronaut Roberto Vittori (foreground), STS-134 mission specialist; along with NASA astronauts Mark Kelly (right background) and Gregory H. Johnson, commander and pilot, respectively, don training versions of their shuttle launch and entry suits in preparation for a post insertion/de-orbit training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. United Space Alliance suit technicians assisted the crew members.

JSC2009-E-121353 (21 May 2009) --- The members of the STS-125 Ascent and Entry flight control team pose for a group portrait in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center. Flight director Norm Knight (left) and astronaut Gregory H. Johnson, spacecraft communicator (CAPCOM), hold the STS-125 mission logo.

JSC2010-E-018558 (3 Feb. 2010) --- NASA astronaut Gregory H. Johnson, STS-134 pilot, attired in a training version of his shuttle launch and entry suit, occupies the pilot?s station on the flight deck of the Full Fuselage Trainer (FFT) during a training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center.

JSC2009-E-122153 (26 May 2009) --- NASA's Johnson Space Center (JSC) director Michael L. Coats (far left) and the STS-125 crew are pictured at the STS-125 crew return ceremony on May 26, 2009 at Ellington Field near JSC. From second left are astronauts Scott Altman, commander; Gregory C. Johnson, pilot; along with astronauts Michael Good, Megan McArthur, John Grunsfeld, Mike Massimino and Andrew Feustel, all mission specialists.