NASA astronaut Doug Wheelock lays a wreath at the grave marker of Virgil "Gus" Grissom from Apollo 1 as part of National Wreaths Across America Day, Sat., Dec. 14, 2019 at Arlington National Cemetery in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans and wreaths are placed at the foot of every headstone. Wheelock honored those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
NASA astronaut Doug Wheelock lays a wreath at the grave marker of Roger Chaffee from Apollo 1 as part of National Wreaths Across America Day, Sat., Dec. 14, 2019 at Arlington National Cemetery in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans and wreaths are placed at the foot of every headstone. Wheelock honored those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
NASA astronaut Doug Wheelock lays a wreath at the gravesite of former astronaut and U.S. Senator John Glenn during National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans and wreaths are placed at the foot of every headstone. Wheelock honored those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
The grave markers of Virgil "Gus" Grissom and Roger Chaffee, from Apollo 1, are seen after NASA astronaut Doug Wheelock laid wreaths at each site as part of National Wreaths Across America Day, Sat., Dec. 14, 2019 at Arlington National Cemetery in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans and wreaths are placed at the foot of every headstone. Wheelock honored those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
NASA astronaut Doug Wheelock takes a moment after laying a wreath at the headstone of the Extortion 17, fellow service members who lost their lives during his tour of duty in Afghanistan, as part of National Wreaths Across America Day, Sat., Dec. 14, 2019 at Arlington National Cemetery in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans. Wheelock honored those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
NASA astronaut Doug Wheelock leaves his STS-120 mission patch at the memorial for the Space Shuttle Challenger crew during National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans and wreaths are placed at the foot of every headstone. Wheelock honored those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
NASA astronaut Doug Wheelock lays a wreath at the memorial for the Space Shuttle Challenger crew during National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans and wreaths are placed at the foot of every headstone. Wheelock honored those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
NASA astronaut Doug Wheelock takes a moment after leaving his STS-120 mission patch at the memorial for the Space Shuttle Columbia crew during National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans and wreaths are placed at the foot of every headstone. Wheelock honored those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
NASA astronaut Doug Wheelock leaves a NASA pin on the headstone of the Extortion 17, fellow service members who lost their lives during his tour of duty in Afghanistan, as part of National Wreaths Across America Day, Sat., Dec. 14, 2019 at Arlington National Cemetery in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans. Wheelock honored those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
NASA astronaut Doug Wheelock leaves his STS-120 mission patch at the gravesite of former astronaut and U.S. Senator John Glenn during National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans and wreaths are placed at the foot of every headstone. Wheelock honored those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
Date: 01-12-09 Location: Bldg 9NW, PLD Subject: Expedition Prefligth Training with Doug Wheelock. Cardio Ambulatory Monitoring, CCISS Task and Sleep Ops. ISS PDL. Photographer: Blair
Date: 01-12-09 Location: Bldg 9NW, PLD Subject: Expedition Prefligth Training with Doug Wheelock. Cardio Ambulatory Monitoring, CCISS Task and Sleep Ops. ISS PDL. Photographer: Blair
A visitor wraps ribbon around a wreath before laying it at a headstone on National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans. NASA astronaut Doug Wheelock attended to honor those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
Items are seen on top of the headstone of former astronaut and U.S. Senator John Glenn on National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans. NASA astronaut Doug Wheelock attended to honor those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
Items are seen at the Space Shuttle Challenger memorial on National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans. NASA astronaut Doug Wheelock attended to honor those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
Visitors stop to look at the headstone of former astronaut and U.S. Senator John Glenn on National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans. NASA astronaut Doug Wheelock attended to honor those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
Items are seen at the Space Shuttle Challenger memorial on National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans. NASA astronaut Doug Wheelock attended to honor those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
The headstone of former astronaut and U.S. Senator John Glenn is seen on National Wreaths Across America Day at Arlington National Cemetery, Sat., Dec. 14, 2019 in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans. NASA astronaut Doug Wheelock attended to honor those who lost their lives in the quest for space exploration as well as fellow service members. Photo Credit: (NASA/Aubrey Gemignani)
Expedition 25 Commander Doug Wheelock signs the inside of a Russian Search and Rescue helicopter shortly after Wheelock, Expedition 25 Flight Engineers Shannon Walker and Fyodor Yurchikhin landed in the Soyuz TMA-19 spacecraft near Arkalyk, Kazakhstan on Friday, Nov. 26, 2010. Russian Cosmonaut Yurchikhin and NASA Astronauts Wheelock and Walker, are returning from nearly six months onboard the International Space Station where they served as members of the Expedition 24 and 25 crews. Photo Credit: (NASA/Bill Ingalls)
NASA astronaut Doug Wheelock talks about his time in space at a STEM day session with students during the 70th International Astronautical Congress, Thursday, Oct. 24, 2019, in Washington. Photo Credit: (NASA/Bill Ingalls)
On National Wreaths Across America Day, items are seen on top of the headstone of the Extortion 17, service members who lost their lives during a tour of duty in Afghanistan, Sat., Dec. 14, 2019 at Arlington National Cemetery in Arlington, Va. National Wreaths Across America Day is held annually to celebrate the lives of military veterans. NASA astronaut Doug Wheelock served with the Extortion 17 and honored them as well as those who lost their lives in the quest for space exploration by laying wreaths at their headstones and at the memorial sites. Photo Credit: (NASA/Aubrey Gemignani)
A Shorty Award is seen Wednesday, March 30, 2011 at NASA Headquarters in Washington. The award was presented to NASA astronaut Doug Wheelock for an image of the moon he took and posted to his Twitter account, @Astro_Wheels, while living aboard the International Space Station last year. The awards ceremony was held at the TimesCenter in New York City on Monday, March 28. Photo Credit: (NASA/Paul E. Alers)
Expedition 25 Commander Doug Wheelock is carried to a nearby medical tent following the landing of the Soyuz TMA-19 spacecraft near the town of Arkalyk, Kazakhstan on Friday, Nov. 26, 2010. Russian Cosmonaut Fyodor Yurchikhin and NASA Astronauts Wheelock and Shannon Walker, returned from nearly six months onboard the International Space Station where they served as members of the Expedition 24 and 25 crews. Photo Credit: (NASA/Bill Ingalls)
Expedition 25 Commander Doug Wheelock is carried to a nearby medical tent following the landing of the Soyuz TMA-19 spacecraft near the town of Arkalyk, Kazakhstan on Friday, Nov. 26, 2010. Russian Cosmonaut Fyodor Yurchikhin and NASA Astronauts Wheelock and Shannon Walker, returned from nearly six months onboard the International Space Station where they served as members of the Expedition 24 and 25 crews. Photo Credit: (NASA/Bill Ingalls)
NASA astronaut Doug Wheelock, speaks about his time in space at a STEM day session with students during the 70th International Astronautical Congress, Wednesday, Oct. 23, 2019 at the Walter E. Washington Convention Center in Washington. Photo credit: (NASA/Aubrey Gemignani)
Expedition 25 Commander Doug Wheelock waves to the camera as Russian Search and Rescue teams and medical personnel carry him from the Soyuz TMA-19 spacecraft shortly after the capsule landed with him, Expedition 25 Flight Engineer Shannon Walker and Flight Engineer Fyodor Yurchikhin near Arkalyk, Kazakhstan on Friday, Nov. 26, 2010. Russian Cosmonaut Yurchikhin and NASA Astronauts Wheelock and Walker, are returning from nearly six months onboard the International Space Station where they served as members of the Expedition 24 and 25 crews. Photo Credit: (NASA/Bill Ingalls)
JSC2009-E-226231 (28 Oct. 2009) --- Attired in a training version of his Extravehicular Mobility Unit (EMU) spacesuit, astronaut Doug Wheelock, Expedition 24 flight engineer and Expedition 25 commander, is about to be submerged in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center. Divers (out of frame) are in the water to assist Wheelock in his rehearsal, which is intended to help prepare him for work on the exterior of the International Space Station.
The crew of Expedition 24 NASA Flight Engineer Doug Wheelock, left, Russian Soyuz Commander Fyodor Yurchikhin and NASA Flight Engineer Shannon Walker are seen during the State Commission meeting to approve the Soyuz launch of Expedition 24 Flight Engineers Doug Wheelock, Shannon Walker and Soyuz Commander Fyodor Yurchikhin on Monday, June 14, 2010 in Baikonur, Kazakhstan. Photo Credit: (NASA/Carla Cioffi)
Expedition 24 NASA Flight Engineer Doug Wheelock has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Shannon Walker launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)
Expedition 24 Flight Engineer Doug Wheelock answers a reporter’s question during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)
Expedition 24 NASA Flight Engineer Doug Wheelock has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Shannon Walker launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)
Expedition 24 Flight Engineer Doug Wheelock, left, answers a reporter’s question during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan, while Soyuz Commander Fyodor Yurchikhin looks on, Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)
Expedition 24 NASA Flight Engineer Shannon Walker, top, Expedition 24 NASA Flight Engineer Doug Wheelock, center, and Expedition 24 Soyuz Commander Fyodor Yurchikhin wave farewell from the bottom of the Soyuz rocket at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Wednesday, June 16, 2010. Walker, Wheelock and Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Photo Credit: (NASA/Carla Cioffi)
Expedition 24 NASA Flight Engineer Doug Wheelock, center, has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Shannon Walker launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)
Soyuz TMA-19 crewmembers including Expedition 25 Commander Doug Wheelock, left, and Flight Engineers Fyodor Yurchikhin and Shannon Walker are seen after being removed from th capsule near the town of Arkalyk, Kazakhstan on Friday, Nov. 26, 2010. Russian Cosmonaut Yurchikhin and NASA Astronauts Wheelock and Walker, are returning from nearly six months onboard the International Space Station where they served as members of the Expedition 24 and 25 crews. Photo Credit: (NASA/Bill Ingalls)
Expedition 24 Flight Engineer Doug Wheelock has his Russian Sokol suit pressure checked at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock and fellow Expedition 24 crew members Flight Engineer Shannon Walker and Soyuz Commander Fyodor Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)
Expedition 24 Flight Engineers Doug Wheelock, left, and Shannon Walker say goodbye to friends and family after a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan, Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)
Expedition 24 Flight Engineer Doug Wheelock has his Russian Sokol suit pressure checked at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock and fellow Expedition 24 crew members Flight Engineer Shannon Walker and Soyuz Commander Fyodor Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)
Expedition 24 Flight Engineer Doug Wheelock has his Russian Sokol suit pressure checked at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock and fellow Expedition 24 crew members Flight Engineer Shannon Walker and Soyuz Commander Fyodor Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)
Expedition 24 Flight Engineer Doug Wheelock performs the traditional door signing prior to his launch to the International Space Station, Tuesday, June 15, 2010 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Wheelock was launched onboard the Soyuz rocket the following morning with Expedition 24 Flight Engineer Shannon Walker and Soyuz Commander Fyodor Yurchikhin on a mission to the ISS. Photo Credit: (NASA/Carla Cioffi)
PHOTO DATE: 03-30-10 LOCATION: BLDG 9NW ISS MOCK UPS SUBJECT: Regenerative ECLSS training in Building 9 for Expedition 24 Doug Wheelock and Shannon Walker WORK ORDER: 0914-EXP24REGEN-03-30-10 PHOTOGRAPHER: BILL STAFFORD
Astronauts Tracy Caldwell Dyson, flight engineer on Expeditions 23 and 24, left, and Doug Wheelock, Expedition 24 flight engineer and commander of Expedition 25, discuss their mission to the International Space Station during a visit to NASA Headquarters in Washington, Wednesday, March 16, 2011. (NASA/Paul E. Alers)
Astronauts Tracy Caldwell Dyson, flight engineer on Expeditions 23 and 24, left, and Doug Wheelock, Expedition 24 flight engineer and commander of Expedition 25, discuss their mission to the International Space Station during a visit to NASA Headquarters in Washington, Wednesday, March 16, 2011. (NASA/Paul E. Alers)
Astronauts Tracy Caldwell Dyson, flight engineer on Expeditions 23 and 24, left, and Doug Wheelock, Expedition 24 flight engineer and commander of Expedition 25, discuss their mission to the International Space Station during a visit to NASA Headquarters in Washington, Wednesday, March 16, 2011.
Expedition 24 NASA Flight Engineers Doug Wheelock, left, and Shannon Walker wave farewell to well-wishers as they depart the Cosmonaut Hotel on the evening before their launch on the Soyuz TMA-19 rocket to the International Space Station, Tuesday, June 15, 2010 in Baikonur, Kazakhstan. Photo Credit: (NASA/Carla Cioffi)
NASA Deputy Administrator Jim Morhard, left, and NASA astronaut Doug Wheelock, right, place wreaths at the graves of Apollo 1 astronauts Virgil “Gus” Grissom, and Roger Chaffee as part of NASA’s Day of Remembrance, Thursday, Jan. 30, 2020, at Arlington National Cemetery in Arlington, Va. The wreaths were laid in memory of those men and women who lost their lives in the quest for space exploration. Photo Credit: (NASA/Joel Kowsky)
Japan Aerospace Exploration Agency astronauts, Koichi Wakata, left, and Takuya Onishi, along with NASA astronauts Doug Wheelock, and Kjell Lindgren, right, meet with children from a local orphanage at the Cosmonaut Hotel, Saturday, June 2, 2018 in Karaganda, Kazakhstan. The astronauts were in Karaganda to help support the Expedition 55 crew Soyuz landing from the International Space Station. Photo Credit: (NASA/Bill Ingalls)
Japan Aerospace Exploration Agency astronauts, Takuya Onishi, lower left, Koichi Wakata, 2nd from left standing, along with NASA astronauts Doug Wheelock, kneeling center, and Kjell Lindgren, standing center, meet with children from a local orphanage at the Cosmonaut Hotel, Saturday, June 2, 2018 in Karaganda, Kazakhstan. The astronauts were in Karaganda to help support the Expedition 55 crew Soyuz landing from the International Space Station. Photo Credit: (NASA/Bill Ingalls)
NASA astronaut Doug Wheelock is seen during an interactive STEM discussion with students attending the 70th International Astronautical Congress, Wednesday, Oct. 23, 2019, at NASA Headquarters in Washington. Wheelock was joined by a panel of young professionals from NASA centers across the country: Farah Alibay, a systems engineer working on the Mars 2020 rover at NASA’s Jet Propulsion Laboratory, Alexis Vance, a Pathways student engineering trainee at NASA’s Johnson Space Center, Victor Joel Cabezas Tapia, a Navigation, Guidance, and Control Engineer at NASA’s Marshall Space Flight Center, and Breanne Stichler, a mechanical engineer in the Crawlers, Transporters and Structures group at NASA’s Kennedy Space Center. Photo Credit: (NASA/Joel Kowsky)
Seated from left, Expedition 25 Commander Doug Wheelock and Flight Engineers Fyodor Yurchikhin and Shannon Walker talk during during a press conference after being greeting back to Earth by girls in traditional Kazakhstan at the Kostanay, Kazakhstan airport on Friday, Nov. 26, 2010. Russian Cosmonaut Yurchikhin and NASA Astronauts Wheelock and Walker, landed in their Soyuz TMA-19 spacecraft outside the town of Arkalyk, Kazakhstan after nearly six months onboard the International Space Station where they served as members of the Expedition 24 and 25 crews. Photo Credit: (NASA/Bill Ingalls)
Astronaut Doug Wheelock discusses his experiences while living on the International Space Station during a tweetup at NASA Headquarters in Washington, Wednesday, March 16, 2011. Wheelock, who has accumulated a total of 178 days in space, assumed command of the International Space Station and the Expedition 25 crew. During Expedition 25, there were more than 120 microgravity experiments in human research; biology and biotechnology; physical and materials sciences; technology development; and Earth and space sciences. Wheelock also responded to an emergency shutdown of half of the station's external cooling system and supported three unplanned spacewalks to replace the faulty pump module that caused the shutdown. His efforts restored the station's critical cooling system to full function. The mission duration was 163 days. Photo Credit: (NASA/Paul E. Alers)
Astronaut Doug Wheelock discusses his experiences while living on the International Space Station during a tweetup at NASA Headquarters in Washington, Wednesday, March 16, 2011. Wheelock, who has accumulated a total of 178 days in space, assumed command of the International Space Station and the Expedition 25 crew. During Expedition 25, there were more than 120 microgravity experiments in human research; biology and biotechnology; physical and materials sciences; technology development; and Earth and space sciences. Wheelock also responded to an emergency shutdown of half of the station's external cooling system and supported three unplanned spacewalks to replace the faulty pump module that caused the shutdown. His efforts restored the station's critical cooling system to full function. The mission duration was 163 days. Photo Credit: (NASA/Paul E. Alers)
Astronaut Doug Wheelock discusses his experiences while living on the International Space Station during a tweetup at NASA Headquarters in Washington, Wednesday, March 16, 2011. Wheelock, who has accumulated a total of 178 days in space, assumed command of the International Space Station and the Expedition 25 crew. During Expedition 25, there were more than 120 microgravity experiments in human research; biology and biotechnology; physical and materials sciences; technology development; and Earth and space sciences. Wheelock also responded to an emergency shutdown of half of the station's external cooling system and supported three unplanned spacewalks to replace the faulty pump module that caused the shutdown. His efforts restored the station's critical cooling system to full function. The mission duration was 163 days. Photo Credit: (NASA/Paul E. Alers)
A tweetuup participant videotapes with her iPhone and tweets as astronaut Doug Wheelock discusses his experiences while living on the International Space Station during a tweetup at NASA Headquarters in Washington, Wednesday, March 16, 2011. Wheelock, who has accumulated a total of 178 days in space, assumed command of the International Space Station and the Expedition 25 crew. During Expedition 25, there were more than 120 microgravity experiments in human research; biology and biotechnology; physical and materials sciences; technology development; and Earth and space sciences. Wheelock also responded to an emergency shutdown of half of the station's external cooling system and supported three unplanned spacewalks to replace the faulty pump module that caused the shutdown. His efforts restored the station's critical cooling system to full function. The mission duration was 163 days. Photo Credit: (NASA/Paul E. Alers)
Expedition 24 NASA Flight Engineer Shannon Walker, top, Expedition 24 NASA Flight Engineer Doug Wheelock, center, and Expedition 24 Soyuz Commander Fyodor Yurchikhin prepare to board their Soyuz TMA-19 spacecraft at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Wednesday, June 16, 2010. Walker, Wheelock and Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Photo Credit: (NASA/Carla Cioffi)
Expedition 24 NASA Flight Engineer Shannon Walker, far right, Soyuz Commander Fyodor Yurchikhin, second from right, and Flight Engineer Doug Wheelock don their Russian Sokol suits at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker, Yurchikhin and Wheelock launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)
Expedition 24 NASA Flight Engineer Doug Wheelock, left, of the U.S. and Soyuz Commander Fyodor Yurchikhin have their Russian Sokol suits prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock, Yurchikhin and Flight Engineer Shannon Walker launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)
Expedition 24 NASA Flight Engineer Shannon Walker, top, Expedition 24 NASA Flight Engineer Doug Wheelock, center, and Expedition 24 Soyuz Commander Fyodor Yurchikhin wave farewell from the bottom of the Soyuz rocket at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Wednesday, June 16, 2010. Walker, Wheelock and Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Photo Credit: (NASA/Carla Cioffi)
The crew of Expedition 24 Flight Engineer Doug Wheelock, left, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Shannon Walker, right, pose for a group photo after a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan, Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)
Expedition 24 Soyuz Commander Fyodor Yurchikhin, far right, and Flight Engineer Doug Wheelock, third from right, are escorted to the Soyuz rocket at the launch pad at the Baikonur Cosmodrome in Baikonur, Kazakhstan on Wednesday, June 16, 2010. Yurchikhin, Wheelock and Flight Engineer Shannon Walker launched in their Soyuz TMA-19 rocket at 3:35 a.m. Wednesday, June 16, 2010. Photo Credit: (NASA/Carla Cioffi)
Expedition 24 NASA Flight Engineer Doug Wheelock, left, of the U.S. and Soyuz Commander Fyodor Yurchikhin have their Russian Sokol suits prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock, Yurchikhin and Flight Engineer Shannon Walker launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)
After a post-landing news conference, members of the STS-120 crew pose for photographers. From left are Pilot George Zamka, Mission Specialist Scott Parazynski, Commander Pamela Melroy and Mission Specialists Stephanie Wilson and Doug Wheelock. The crew completed a 15-day mission to the International Space Station with a smooth landing on Runway 33. Main gear touchdown was 1:01:16 p.m. Wheel stop was at 1:02:07 p.m. Mission elapsed time was 15 days, 2 hours, 24 minutes and 2 seconds. Mission STS-120 continued the construction of the station with the installation of the Harmony Node 2 module and the relocation of the P6 truss.
NASA astronaut Doug Wheelock, is seen during a panel discussion with Rick Armstrong, son of Apollo 11 astronaut Neil Armstrong, Apollo 11 astronaut Buzz Aldrin, and John Logsdon, Apollo historian and Professor Emeritus at George Washington University, at the International Astronautical Federation World Space Award highlight lecture at the 70th International Astronautical Congress, Thursday, Oct. 24, 2019, at the Walter E. Washington Convention Center in Washington. The 2019 World Space Award was presented to the crew of Apollo 11. Photo Credit: (NASA/Joel Kowsky)
Expedition 24 back-up European Space Agency crew member Paolo Nespoli of Italy, far left, helps Doug Wheelock and Soyuz Commander Fyodor Yurchikhin with their Russian Sokol suit preparations at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Photo Credit: (NASA/Carla Cioffi)
Expedition 24 back-up European Space Agency crew member Paolo Nespoli of Italy helps Doug Wheelock with his Russian Sokol suit preparations at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Photo Credit: (NASA/Carla Cioffi)
JSC2009-E-226238 (28 Oct. 2009) --- Attired in training versions of their Extravehicular Mobility Unit (EMU) spacesuits, astronauts Tracy Caldwell, Expedition 23/24 flight engineer; and Doug Wheelock (mostly obscured), Expedition 24 flight engineer and Expedition 25 commander, are about to be submerged in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center. Divers are in the water to assist the crew members in their rehearsal, which is intended to help prepare them for work on the exterior of the International Space Station.
NASA astronaut Mike Massimino, far left, Sesame Street's Elmo and NASA astronaut Doug Wheelock, far right, speak at the STS-135 Tweetup, Thursday, July 7, 2011, at Kennedy Space Center in Cape Canaveral, Fla. Elmo asked the astronauts questions about living and working in space. About 150 NASA Twitter followers attended the event. The STS-135 mission will be NASA's last space shuttle launch. Photo Credit: (NASA/Paul E. Alers)
NASA astronaut Jeanette Epps, center, answers a question along slide NASA Administrator Jim Bridenstine, left, and NASA astronaut Doug Wheelock, right, during an interactive STEM discussion with students attending the 70th International Astronautical Congress, Wednesday, Oct. 23, 2019, at NASA Headquarters in Washington. Photo Credit: (NASA/Joel Kowsky)
Former NASA astronaut Frank Culbertson, left, NASA astronaut Alvin Drew, former NASA astronaut Garrett Reisman, NASA astronauts Jeanette Epps, and Doug Wheelock, right, talk about their time in space at a STEM day session with students during the 70th International Astronautical Congress, Thursday, Oct. 24, 2019, in Washington. Photo Credit: (NASA/Bill Ingalls)
The STS-120 crew members are ready for their return to flight to Houston. From left are Pilot George Zamka, Mission Specialists Paolo Nespoli, Doug Wheelock, Stephanie Wilson and Scott Parazynski, and Commander Pamela Melroy. A welcoming ceremony for the crew is planned at NASA's Hangar 276 on the south end of Ellington Field in Texas. On the 15-day mission, the STS-120 crew continued the construction of the station with the installation of the Harmony Node 2 module and the relocation of the P6 truss. They landed Nov. 7 at NASA's Kennedy Space Center.
Members of the STS-120 crew take part in a news conference after their successful landing aboard space shuttle Discovery at NASA's Kennedy Space Center. From left are Commander Pamela Melroy, Pilot George Zamka and mission specialists Scott Parazynski, Stephanie Wilson and Doug Wheelock. The crew completed a 15-day mission to the International Space Station with a smooth landing on Runway 33. Main gear touchdown was 1:01:16 p.m. Wheel stop was at 1:02:07 p.m. Mission elapsed time was 15 days, 2 hours, 24 minutes and 2 seconds. Mission STS-120 continued the construction of the station with the installation of the Harmony Node 2 module and the relocation of the P6 truss.
Astronaut Pam Melroy presents a commemorative collage of photos and items flown aboard space shuttle Discovery to Bob Cabana, director of NASA's Stennis Space Center in South Mississippi. Melroy commanded NASA's space shuttle mission STS-120. She and fellow crewmembers (from left) Doug Wheelock, Stephanie Wilson, George Zamka, Scott Parazynski and Paolo Nespoli visited Stennis Dec. 13, 2007, to thank employees for the reliability and safe performance of the space shuttle's main engines, which on Oct. 23 launched them aboard Discovery on their mission to the International Space Station.
JSC2007-E-08803 (5 Dec. 2006) --- Astronaut Douglas H. Wheelock, mission specialist
Expedition 24 NASA Flight Engineer Doug Wheelock, left, Expedition 24 Soyuz Commander Fyodor Yurchikhin and Expedition 24 Flight Engineer Shannon Walker, third from left, walk out to salute Head of the Russian Federal Space Agency Anatoly Perminov, far right, prior to their launch onboard the Soyuz TMA-19 to the International Space Station (ISS), Wednesday, June 16, 2010 in Baikonur, Kazakhstan. Photo Credit: (NASA/Victor Zelentsov)
NASA astronauts Doug Wheelock, left, Alvin Drew, second from right, Jeanette Epps, right, and former astronauts Janet Kavandi, second from left, and Bob Curbeam, center, spoke about their time in space at a STEM day session with students during the 70th International Astronautical Congress, Wednesday, Oct. 23, 2019 at the Walter E. Washington Convention Center in Washington. Photo credit: (NASA/Aubrey Gemignani)
Jody Singer, Director of NASA’s Marshall Space Flight Center, left, moderates a discussion with NASA Administrator Jim Bridenstine, NASA astronauts Jeanette Epps and Doug Wheelock, and former NASA astronaut and co-chair of the local organizing committee for the International Astronautical Congress Sandy Magnus, during an interactive STEM discussion with students attending the 70th International Astronautical Congress, Wednesday, Oct. 23, 2019, at NASA Headquarters in Washington. Photo Credit: (NASA/Joel Kowsky)
NASA astronauts Jeanette Epps, left, Alvin Drew, second from left, Doug Wheelock, right, and former astronauts Bob Curbeam, center, and Janet Kavandi, second from right, spoke about their time in space at a STEM day session with students during the 70th International Astronautical Congress, Wednesday, Oct. 23, 2019 at the Walter E. Washington Convention Center in Washington. Photo credit: (NASA/Aubrey Gemignani)
The crews of Expedition 23 and 24 are seen on a large TV screen in the Russian Mission Control Center in Korolev, Russia, Friday, June 19, 2010 shortly after the Soyuz TMA-19 spacecraft docked to the International Space Station and delivered Expedition 24 Flight Engineers and NASA astronauts Shannon Walker and Doug Wheelock, and Flight Engineer and Russian cosmonaut Fyodor Yurchikhin. Seen clockwise from top left: Mikhail Kornienko, Expedition 24 Commander Alexander Skvortsov, Tracy Caldwell Dyson, Doug Wheelock, Fyodor Yurchikhin and Shannon Walker. Photo Credit: (NASA/Carla Cioffi)
Doug Wheelock - EXP 24 Flight Engineer
Expedition 24 prime and back-up crew members pose pose for a group photo after a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan, Monday, June 14, 2010. From left: NASA astronaut Doug Wheelock, Russian cosmonaut Fyodor Yurchikhin, NASA astronaut Shannon Walker, NASA astronaut Cady Coleman, Russian cosmonaut Dimitri Kondratiev and European Space Agency Paolo Nespoli of Italy. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)
EXP 24 Prime Crew - Doug Wheelock, Fyodor Yurchikhin and Shannon Walker
NASA astronaut Doug Wheelock, left, Rick Armstrong, son of Apollo 11 astronaut Neil Armstrong, second from left, Apollo 11 astronaut Buzz Aldrin, second from right, and John Logsdon, Apollo historian and Professor Emeritus at George Washington University, right, are seen during a panel discussion during the International Astronautical Federation World Space Award highlight lecture at the 70th International Astronautical Congress, Thursday, Oct. 24, 2019, at the Walter E. Washington Convention Center in Washington. The 2019 World Space Award was presented to the crew of Apollo 11. Photo Credit: (NASA/Joel Kowsky)
NASA astronaut Doug Wheelock, left, Rick Armstrong, son of Apollo 11 astronaut Neil Armstrong, second from left, Apollo 11 astronaut Buzz Aldrin, second from right, and John Logsdon, Apollo historian and Professor Emeritus at George Washington University, right, are seen during a panel discussion during the International Astronautical Federation World Space Award highlight lecture at the 70th International Astronautical Congress, Thursday, Oct. 24, 2019, at the Walter E. Washington Convention Center in Washington. The 2019 World Space Award was presented to the crew of Apollo 11. Photo Credit: (NASA/Joel Kowsky)
Expedition 22 NASA Flight Engineer Timothy J. Creamer of the U.S., left, and Flight Engineer Soichi Noguchi of Japan pose for a photograph with NASA Flight Surgeon Pete Bauer, standing left, and NASA Expedition 22 backup Astronaut Doug Wheelock at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Sunday, Dec. 20, 2009. Creamer, Noguchi and fellow Expedition 22 crew member, Soyuz Commander Oleg Kotov of Russia, launched in their Soyuz TMA-17 rocket from the Baikonur Cosmodrome in Kazakhstan on Monday, Dec. 21, 2009. (Photo Credit: NASA/Bill Ingalls)
Expedition 22 crew members, seated from left, NASA Flight Engineer Timothy J. Creamer of the U.S., Soyuz Commander Oleg Kotov of Russia, and Flight Engineer Soichi Noguchi of Japan and their backup crew members, standing from left, NASA’s Doug Wheelock, Russian Anton Shkaplerov and Japan’s Satoshi Furakawa, pose for a group photo shortly after donning their flight suits a few hours before the scheduled launch of the Soyuz TMA-17 spacecraft from the Baikonur Cosmodrome in Kazakhstan, Sunday Dec. 20, 2009. Photo Credit: (NASA/Bill Ingalls)
NASA astronaut Doug Wheelock, left, Rick Armstrong, son of Apollo 11 astronaut Neil Armstrong, second from left, Apollo 11 astronaut Buzz Aldrin, second from right, and John Logsdon, Apollo historian and Professor Emeritus at George Washington University, right, are seen during a panel discussion during the International Astronautical Federation World Space Award highlight lecture at the 70th International Astronautical Congress, Thursday, Oct. 24, 2019, at the Walter E. Washington Convention Center in Washington. The 2019 World Space Award was presented to the crew of Apollo 11. Photo Credit: (NASA/Joel Kowsky)
NASA astronaut Doug Wheelock, left, is joined by a panel of young professionals from NASA centers across the country: Farah Alibay, a systems engineer working on the Mars 2020 rover at NASA’s Jet Propulsion Laboratory, Alexis Vance, a Pathways student engineering trainee at NASA’s Johnson Space Center, Victor Joel Cabezas Tapia, a Navigation, Guidance, and Control Engineer at NASA’s Marshall Space Flight Center, and Breanne Stichler, a mechanical engineer in the Crawlers, Transporters and Structures group at NASA’s Kennedy Space Center, during an interactive STEM discussion with students attending the 70th International Astronautical Congress, Wednesday, Oct. 23, 2019, at NASA Headquarters in Washington. Photo Credit: (NASA/Joel Kowsky)
NASA Deputy Administrator Jim Morhard, left, and NASA astronaut Doug Wheelock, right, look on as June Scobee Rodgers, widow of Challenger commander Richard Scobee, Chuck Resnik, brother of Challenger mission specialist Judy Resnik, and Jane Smith Wolcott, widow of Challenger pilot Michael Smith, place flowers at the graves of Apollo 1 astronauts Virgil “Gus” Grissom, and Roger Chaffee as part of NASA’s Day of Remembrance, Thursday, Jan. 30, 2020, at Arlington National Cemetery in Arlington, Va. The wreaths were laid in memory of those men and women who lost their lives in the quest for space exploration. Photo Credit: (NASA/Joel Kowsky)
Expedition 22 backup crew members, from left, NASA’s Doug Wheelock, Russian Anton Shkaplerov and Japan’s Satoshi Furakawa are seen during during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan, Saturday, Dec., 19, 2009. The launch of the Soyuz spacecraft with Expedition 22 NASA Flight Engineer Timothy J. Creamer of the U.S., Soyuz Commander Oleg Kotov of Russia and Flight Engineer Soichi Noguchi of Japan, is scheduled for Monday, Dec., 21, 2009 at 3:52a.m. Kazakhstan time. Photo Credit (NASA/Bill Ingalls)
A member of the audience takes a picture of NASA astronaut Doug Wheelock, Rick Armstrong, son of Apollo 11 astronaut Neil Armstrong, Apollo 11 astronaut Buzz Aldrin, and John Logsdon, Apollo historian and Professor Emeritus at George Washington University, on stage during the International Astronautical Federation World Space Award highlight lecture at the 70th International Astronautical Congress, Thursday, Oct. 24, 2019, at the Walter E. Washington Convention Center in Washington. The 2019 World Space Award was presented to the crew of Apollo 11. Photo Credit: (NASA/Joel Kowsky)
Philippe Étienne, French Ambassador to the U.S., center, and Jean-Yves Le Gall, president of the French space agency, National Centre for Space Studies (CNES), left, speak to NASA astronaut Doug Wheelock at the NASA exhibit during the 70th International Astronautical Congress, Wednesday, Oct. 23, 2019, at the Walter E. Washington Convention Center in Washington. Photo credit: (NASA/Aubrey Gemignani)
Jean-Yves Le Gall, president of the French space agency, National Centre for Space Studies (CNES), center, shakes hands with NASA astronaut Doug Wheelock after he and Philippe Étienne, French Ambassador to the U.S., second from left, visited the NASA exhibit during the 70th International Astronautical Congress, Wednesday, Oct. 23, 2019, at the Walter E. Washington Convention Center in Washington. Photo credit: (NASA/Aubrey Gemignani)
ISS025-E-007370 (14 Oct. 2010) --- NASA astronaut Doug Wheelock, Expedition 25 commander, works in a glovebox in the Destiny laboratory of the International Space Station.
ISS025-E-007217 (12 Oct. 2010) --- NASA astronaut Doug Wheelock, Expedition 25 commander, floats into the Harmony node of the International Space Station.
ISS024-E-006194 (17 June 2010) --- NASA astronauts Doug Wheelock, Shannon Walker (foreground) and Tracy Caldwell Dyson, all Expedition 24 flight engineers, are pictured in the Zvezda Service Module of the International Space Station shortly after Wheelock and Walker’s arrival in the Soyuz TMA-19 spacecraft.
ISS025-E-007216 (12 Oct. 2010) --- NASA astronauts Doug Wheelock, Expedition 25 commander; and Shannon Walker, flight engineer, work in the Destiny laboratory of the International Space Station.
ISS024-E-006224 (20 June 2010) --- NASA astronaut Doug Wheelock, Expedition 24 flight engineer, uses a vacuum cleaner during housekeeping operations in the Destiny laboratory of the International Space Station.
Date: 12/16/13 Location: Bldg 9NW, POGO Stand Subject: Doug Wheelock in POGO harness to evaluate EVA procedures and preparations for the ammonia coolant leak on ISS Photographer: James Blair/NASA
S120-E-007899 (1 Nov. 2007) --- Astronaut Doug Wheelock, STS-120 mission specialist, uses a computer on the middeck of Space Shuttle Discovery while docked with the International Space Station.
ISS024-E-007376 (3 July 2010) --- NASA astronauts Shannon Walker and Doug Wheelock, both Expedition 24 flight engineers, pose for a photo with an American flag while aboard the International Space Station.