Internal view of Waste and Hygiene Compartment (WHC) taken during maintenance by the Expedition 40 crew.

ISS034-E-051715 (20 Feb. 2013) --- Canadian Space Agency astronaut Chris Hadfield, Expedition 34 flight engineer, performs routine maintenance on Biolab in the Columbus Module aboard the International Space Station.

View of Canadian Space Agency (CSA) Chris Hadfield, Expedition 34 Flight Engineer (FE), during Waste and Hygiene Compartment (WHC) routine annual maintenance, in the Node 3. Photo was taken during Expedition 34.

Members of Marshall's Facilities Operations and Maintenance Office team, including, clockwise from left, Robert Drane, Jeremy Holmes, Don Davis, team foreman Dusty Crouch, Wesley Brook and Lucas Broadway, gather to inspect and replace a pipe fitting.

ISS044E051876 (08/14/2015) ---Onboard the International Space Station Aug. 14, 2015, NASA astronaut Kjell Lindgren of Expedition 44 performs routine maintenance on U.S. spacesuits in the station’s Quest airlock.

NASA's Super Guppy cargo transport aircraft taxis in from the Plant 42 runway to NASA"s Armstrong Flight Research Center Building 703 ramp. The aircraft is being stored in the hangar during its phase maintenance check.

iss053e303473 (11/132017) --- Photo documentation of Augmented Reality Application for Maintenance, Inventory and Stowage (ARAMIS) Maintenance Session abord the International Space Station (ISS). The ARAMIS investigation demonstrates use of augmented reality technology to improve efficiency of operations aboard the space station.

ISS020-E-045311 (5 Oct. 2009) --- NASA astronaut Jeffrey Williams, Expedition 21 flight engineer, performs in-flight maintenance (IFM) on the Cycle Ergometer with Vibration Isolation (CEVIS) braking band in the Destiny laboratory of the International Space Station.

ISS019-E-011471 (28 April 2009) --- Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 19/20 flight engineer, performs in-flight maintenance on the waste and hygiene compartment located in the Destiny laboratory of the International Space Station.

ISS019-E-011464 (28 April 2009) --- Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 19/20 flight engineer, performs in-flight maintenance on the waste and hygiene compartment located in the Destiny laboratory of the International Space Station.

ISS024-E-006461 (24 June 2010) --- NASA astronaut Shannon Walker, Expedition 24 flight engineer, performs routine in-flight maintenance (IFM) on the Combined Operational Load Bearing External Resistance Treadmill (COLBERT) in the Tranquility node of the International Space Station.

ISS019-E-008750 (21 April 2009) --- Astronaut Michael Barratt, Expedition 19/20 flight engineer, performs in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

In the Orbiter Processing Facility, David Sanborn and Rick Cady, with United Space Alliance, check tiles on the underside of Endeavour. Tile check is part of routine maintenance and return to flight activities on the orbiter fleet.

In the Orbiter Processing Facility, Rick Cady, with United Space Alliance, removes a tile from Endeavour. Tile check is part of routine maintenance and return to flight activities on the orbiter fleet.

ISS019-E-008752 (21 April 2009) --- Astronaut Michael Barratt, Expedition 19/20 flight engineer, performs in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

In the Orbiter Processing Facility, David Sanborn and Rick Cady, with United Space Alliance, check tiles on the underside of Endeavour. Tile check is part of routine maintenance and return to flight activities on the orbiter fleet.

iss071e007603 (April 15, 2024) --- Expedition 71 Flight Engineer and NASA astronaut Mike Barratt reviews procedures on a computer tablet during maintenance on a pair of spacesuits inside the International Space Station's Quiest airlock.

ISS019-E-008764 (21 April 2009) --- Astronaut Michael Barratt, Expedition 19/20 flight engineer, performs in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

ISS028-E-013757 (1 July 2011) --- Russian cosmonaut Andrey Borisenko, Expedition 28 commander, performs in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

ISS028-E-014395 (6 July 2011) --- NASA astronaut Ron Garan, Expedition 28 flight engineer, performs in-flight maintenance on the Mass Constituents Analyzer (MCA) in the Destiny laboratory of the International Space Station.

ISS019-E-008767 (21 April 2009) --- Astronaut Michael Barratt, Expedition 19/20 flight engineer, performs in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

iss063e002821 (April 23, 2020) --- NASA astronaut and Expedition 63 Commander Chris Cassidy performs maintenance on the Combustion Integrated Rack, a research device that enables safe fuel, flame and soot studies in microgravity.

ISS028-E-005117 (24 May 2011) --- NASA astronauts Michael Fincke (bottom), STS-134 mission specialist; and Ron Garan, Expedition 28 flight engineer, perform maintenance on the Carbon Dioxide Removal Assembly (CDRA) in the Air Revitalization 2 (AR2) rack in the Tranquility node of the International Space Station while space shuttle Endeavour remains docked with the station.

iss048e017435 (6/30/2016) --- Commander Jeff Williams monitors bowling ball-sized internal satellites known as SPHERES (Synchronized Position Hold, Engage, Reorient, Experimental Satellites) during a maintenance run in the Japanese Kibo Laboratory Module.

ISS038-E-013921 (11 Dec. 2013) --- Russian cosmonauts Sergey Ryazanskiy (left) and Mikhail Tyurin, both Expedition 38 flight engineers, perform routine in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

ISS014-E-09897 (14 Dec. 2006) -- European Space Agency (ESA) astronaut Thomas Reiter, STS-116 mission specialist, works with the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station during in-flight maintenance (IFM) while Space Shuttle Discovery was docked with the station.

ISS016-E-030559 (4 March 2008) --- European Space Agency (ESA) astronaut Leopold Eyharts, Expedition 16 flight engineer, works with the Treadmill Vibration Isolation System (TVIS) removed from the Zvezda Service Module floor during in-flight maintenance (IFM) on the International Space Station.

ISS019-E-008758 (21 April 2009) --- Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 19/20 flight engineer, performs in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

ISS041-E-011857 (15 Sept. 2014) --- NASA astronaut Reid Wiseman, Expedition 41 flight engineer, performs in-flight maintenance on the Combined Operational Load Bearing External Resistance Treadmill (COLBERT) in the Tranquility node of the International Space Station.

ISS019-E-008754 (21 April 2009) --- Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 19/20 flight engineer, performs in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

iss056e050302 (6/28/2018) --- Cosmonaut Oleg Artemyev and NASA astronaut Ricky Arnold during the Synchronized Position Hold Engage and Reorient Experimental Satellites (SPHERES) maintenance session two, in the Japanese Experiment Module (JEM) Pressurized Module (JPM).

iss056e050304 (6/28/2018) --- Cosmonaut Oleg Artemyev and NASA astronaut Ricky Arnold during the Synchronized Position Hold Engage and Reorient Experimental Satellites (SPHERES) maintenance session two, in the Japanese Experiment Module (JEM) Pressurized Module (JPM).

ISS028-E-013758 (1 July 2011) --- Russian cosmonauts Sergei Volkov, Expedition 28 flight engineer; and Andrey Borisenko (mostly out of frame at left), commander, perform in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

Enterprise inside the Orbiter Maintenance and Checkout Facility at Vandenberg, AFB, California

ISS034-E-063336 (8 March 2013) --- NASA astronaut Tom Marshburn, Expedition 34 flight engineer, performs maintenance on the Carbon Dioxide Removal Assembly in the Japanese Experiment Module (JEM) Pressurized Module (JPM).

ISS034-E-063052 (9 March 2013) --- NASA astronaut Kevin Ford, Expedition 34 commander, performs maintenance on the Carbon Dioxide Removal Assembly in the Japanese Experiment Module (JEM) Pressurized Module (JPM).

iss072e363875 (Dec. 9, 2024) ---A U.S. spacesuit is pictured being serviced for maintenance inside the International Space Station's Quest airlock.

ISS040-E-099850 (18 Aug. 2014) --- NASA astronaut Reid Wiseman, Expedition 40 crew member, performs routine in-flight maintenance in the Tranquility node of the International Space Station.

PHOTO DATE: 05-13-09 LOCATION: NBL POOLSIDE SUBJECT:Soichi Noguchi preparations for Maintenance EVA task at the NBL PHOTOGRAPHER: BILL STAFFORD X34753

PHOTO DATE: 05-13-09 LOCATION: NBL POOLSIDE SUBJECT:Soichi Noguchi preparations for Maintenance EVA task at the NBL PHOTOGRAPHER: BILL STAFFORD X34753

PHOTO DATE: 05-13-09 LOCATION: NBL POOLSIDE SUBJECT:Soichi Noguchi preparations for Maintenance EVA task at the NBL PHOTOGRAPHER: BILL STAFFORD X34753

PHOTO DATE: 05-13-09 LOCATION: NBL POOLSIDE SUBJECT:Soichi Noguchi preparations for Maintenance EVA task at the NBL PHOTOGRAPHER: BILL STAFFORD X34753

PHOTO DATE: 05-13-09 LOCATION: NBL POOLSIDE SUBJECT:Soichi Noguchi preparations for Maintenance EVA task at the NBL PHOTOGRAPHER: BILL STAFFORD X34753

PHOTO DATE: 05-13-09 LOCATION: NBL POOLSIDE SUBJECT:Soichi Noguchi preparations for Maintenance EVA task at the NBL PHOTOGRAPHER: BILL STAFFORD X34753

PHOTO DATE: 05-13-09 LOCATION: NBL POOLSIDE SUBJECT:Soichi Noguchi preparations for Maintenance EVA task at the NBL PHOTOGRAPHER: BILL STAFFORD X34753

iss055e035366 (April 16, 2018) --- NASA astronaut Ricky Arnold performs maintenance on the Advanced Colloids Experiment Module located inside the Light Microscopy Module which is a modified commercial, highly flexible, state-of-the-art light imaging microscope facility that provides researchers with powerful diagnostic hardware and software in microgravity.

ISS005-E-17388 (13 October 2002) --- Cosmonaut Sergei Y. Treschev (left) and astronaut Peggy A. Whitson, Expedition Five flight engineers, perform maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module on the International Space Station (ISS). Treschev represents Rosaviakosmos.

ISS005-E-17387 (13 October 2002) --- Cosmonaut Sergei Y. Treschev (left) and astronaut Peggy A. Whitson, Expedition Five flight engineers, perform maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module on the International Space Station (ISS). Treschev represents Rosaviakosmos.

ISS027-E-019793 (2 May 2011) --- NASA astronaut Cady Coleman, Expedition 27 flight engineer, performs in-flight maintenance (IFM) on the Gradient Heating Furnace (GHF) on the Kobairo Rack in the Kibo laboratory of the International Space Station.

View of SpaceX Crew-8 and NASA astronaut Matthew Dominick in his Extravehicular Mobility Unit (EMU) without his helmet before the ISS Extravehicular Activity (EVA) Maintenance 4 with a suited run at the Neutral Buoyancy Laboratory (NBL).

ISS034-E-033549 (23 Jan. 2013) --- Russian cosmonaut Oleg Novitskiy, Expedition 34 flight engineer, performs routine in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

ISS030-E-032750 (11 Jan. 2012) --- NASA astronaut Dan Burbank, Expedition 30 flight commander, performs the Waste and Hygiene Compartment (WHC) yearly maintenance in the Tranquility node of the International Space Station. The maintenance included removing and replacing the urine hydraulic components which include urine lines, urine valve block and urine pressure sensors, and removing and replacing the Flush Water Tank Pressure Sensor.

S89-28090 (24 Jan 1989) --- The orbiter Columbia, slated for mission STS-28 is rolled over from the Orbiter Maintenance and Refurbishment Facility to the Orbiter Processing Facility bay 1 to begin processing for its mission in July 1989. The Department of Defense dedicted mission will be commanded by astronaut Brewster Shaw.

ISS028-E-019399 (28 July 2011) --- NASA astronaut Mike Fossum, Expedition 28 flight engineer, performs in-flight maintenance on the advanced Resistive Exercise Device (aRED) in the Tranquility node of the International Space Station.

ISS030-E-148280 (13 March 2012) --- NASA astronaut Dan Burbank, Expedition 30 commander, performs routine in-flight maintenance on Extravehicular Mobility Unit (EMU) equipment in the Quest airlock of the International Space Station.

iss056e011715 (June 14, 2018) --- Cosmonauts Oleg Artemyev (at bottom) and Sergey Prokopyev work inside the Zvezda service module performing monthly maintenance on the Smart Switch Router. Credit: Roscosmos

iss072e097785 (Oct. 19, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Mike Barratt works on maintenance activities aboard the International Space Station's Harmony module.

iss072e005823 (Sept. 29, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit works on maintenance activities aboard the International Space Station's Harmony module.

iss072e002337 (Sept. 27, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Don Pettit works on maintenance activities aboard the International Space Station's Harmony module.

ISS006-E-08763 (13 December 2002) --- Astronaut Donald R. Pettit, Expedition Six NASA ISS science officer, performs scheduled in-flight maintenance (IFM) in the Destiny laboratory on the International Space Station (ISS).

ISS028-E-019392 (28 July 2011) --- NASA astronaut Mike Fossum, Expedition 28 flight engineer, performs in-flight maintenance on the advanced Resistive Exercise Device (aRED) in the Tranquility node of the International Space Station.

ISS030-E-148275 (13 March 2012) --- NASA astronaut Dan Burbank, Expedition 30 commander, performs routine in-flight maintenance on Extravehicular Mobility Unit (EMU) equipment in the Quest airlock of the International Space Station.

iss073e0118760 (May 29, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Jonny Kim works on spacesuit maintenance operations inside the International Space Station's Quest airlock.

iss068e032401 (Dec. 22, 2023) --- Roscosmos cosmonaut and Expedition 68 Flight Engineer conducts communications and electronics maintenance while wearing personal protective equipment aboard the International Space Station.

ISS006-E-08766 (13 December 2002) --- Astronaut Donald R. Pettit, Expedition 6 NASA ISS science officer, performs scheduled in-flight maintenance (IFM) in the Destiny laboratory on the International Space Station (ISS).

iss072e517812 (Jan. 21, 2025) --- NASA astronaut and Expedition 72 Commander Suni Williams is pictured during maintenance activities inside the International Space Station's Unity module.

iss072e146329 (Nov. 6, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Butch Wilmore works on science maintenance tasks inside the International Space Station's Kibo laboratory module.

iss072e014343 (Oct. 4, 2024) --- NASA astronaut and Expedition 72 Flight Engineer Butch Wilmore performs spacesuit maintenance aboard the International Space Station's Quest airlock.

ISS030-E-148276 (13 March 2012) --- NASA astronaut Dan Burbank, Expedition 30 commander, performs routine in-flight maintenance on Extravehicular Mobility Unit (EMU) equipment in the Quest airlock of the International Space Station.

iss069e017995 (June 5, 2023) --- NASA astronaut and Expedition 69 Flight Engineer Frank Rubio performs maintenance on the International Space Station's treadmill located in the Tranquility module.

ISS017-E-012864 (12 Aug. 2008) --- NASA astronaut Greg Chamitoff, Expedition 17 flight engineer, performs in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

S103-E-5184 (21 December 1999) --- Astronaut C. Michael Foale, mission specialist, performs a minor maintenance task on the mid deck of the Earth-orbiting Space Shuttle Discovery. The long rectangular structure near Foale's head is the escape pole, which has been standard equipment on the shuttle fleet since 1988. The photo was recorded with an electronic still camera (ESC) at 10:39:31 GMT, Dec. 21, 1999.

ISS005-E-17412 (13 October 2002) --- Cosmonaut Valery G. Korzun (left), Expedition Five mission commander, and astronaut Peggy A. Whitson, Expedition Five flight engineer, perform maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module on the International Space Station (ISS). Korzun represents Rosaviakosmos.

ISS029-E-011030 (26 Sept. 2011) --- Japan Aerospace Exploration Agency astronaut Satoshi Furukawa, Expedition 29 flight engineer, performs protective maintenance on Extravehicular Mobility Unit (EMU) spacesuits in the Quest airlock of the International Space Station.

iss062e014085 (Feb. 22, 2020) --- NASA astronaut and Expedition 62 Flight Engineer Andrew Morgan services the Microgravity Science Glovebox (MSG) inside the U.S. Destiny laboratory module. Morgan was cleaning and lubricating the MSG components and photographing the maintenance work for inspection.

ISS034-E-038128 (1 Feb. 2013) --- NASA astronaut Tom Marshburn, Expedition 34 flight engineer, performs in-flight maintenance in the International Space Station’s Destiny laboratory, making some upgrades to automated payload switches (APS) for various racks and experiments.

ISS038-E-024145 (30 Dec. 2013) --- NASA astronaut Mike Hopkins, Expedition 38 flight engineer, performs in-flight maintenance on combustion research hardware in the Destiny laboratory of the International Space Station. Hopkins replaced a Multi-user Droplet Combustion Apparatus (MDCA) fuel reservoir inside the Combustion Integrated Rack (CIR).

ISS026-E-027009 (14 Feb. 2011) --- European Space Agency (ESA) astronaut Paolo Nespoli, Expedition 26 flight engineer, performs periodic maintenance on the Pulmonary Function in Flight (PuFF) experiment by re-greasing the PuFF calibration syringe in the Columbus laboratory of the International Space Station.

ISS002-E-5137 (April 2001) --- Cosmonaut Yury V. Usachev, Expedition Two mission commander, performs routine maintenance on the International Space Station's (ISS) Treadmill Vibration Isolation System (TVIS) in the Zvezda / Service Module. This image was recorded with a digital still camera.

ISS030-E-155912 (16 Jan. 2012) --- NASA astronaut Dan Burbank, Expedition 30 commander, performs in-flight maintenance on the front stray light cover for the Microgravity Science Glovebox (MSG) in the Destiny laboratory of the International Space Station.

ISS017-E-012861 (12 Aug. 2008) --- Russian Federal Space Agency cosmonaut Sergei Volkov, Expedition 17 commander, performs in-flight maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module of the International Space Station.

ISS034-E-038131 (1 Feb. 2013) --- NASA astronaut Tom Marshburn, Expedition 34 flight engineer, performs in-flight maintenance in the International Space Station’s Destiny laboratory, making some upgrades to automated payload switches (APS) for various racks and experiments.

ISS030-E-155913 (16 Jan. 2012) --- NASA astronaut Dan Burbank, Expedition 30 commander, performs in-flight maintenance on the front stray light cover for the Microgravity Science Glovebox (MSG) in the Destiny laboratory of the International Space Station.

ISS030-E-148284 (13 March 2012) --- European Space Agency astronaut Andre Kuipers, Expedition 30 flight engineer, performs routine in-flight maintenance on Extravehicular Mobility Unit (EMU) equipment in the Quest airlock of the International Space Station.

ISS002-E-7015 (26 April 2001) --- Cosmonaut Yury V. Usachev, Expedition Two commander representing Rosaviakosmos, conducts maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda/Service Module. A digital still camera was used to record this image.

ISS018-E-009980 (2 Dec. 2008) --- Astronaut Michael Fincke, Expedition 18 commander, works with the ACY control panel on the Hygiene Maintenance System in the Zvezda Service Module of the International Space Station.

ISS018-E-017299 (2 Jan. 2009) --- Astronaut Michael Fincke, Expedition 18 commander, poses for a photo with hardware related to in-flight maintenance on the Mass Constituents Analyzer (MCA) in the Destiny laboratory of the International Space Station.

iss073e0118752 (May 29, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Jonny Kim works on spacesuit maintenance operations inside the International Space Station's Quest airlock.

ISS030-E-051116 (28 Jan. 2012) --- NASA astronaut Dan Burbank, Expedition 30 commander, performs in-flight maintenance on the Water Recovery System 2 (WRS-2) in the Tranquility node of the International Space Station.

iss072e063703 (Oct. 15, 2024) --- NASA astronauts Nick Hague and Suni Williams, Expedition 72 Flight Engineer and Commander respectively, discuss orbital lab maintenance procedures aboard the International Space Station.

iss073e0033632 (May 16, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Jonny Kim works on computer networking maintenance inside the International Space Station's Columbus laboratory module.

iss073e1044139 (Oct. 8, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Jonny Kim performs laptop computer maintenance inside the International Space Station's Destiny laboratory module.

iss073e0511300 (Aug. 19, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Mike Fincke is pictured during communications maintenance activities aboard the International Space Station's Destiny laboratory module.

iss073e0547544 (Aug. 27, 2025) --- Roscosmos cosmonaut and Expedition 73 Commander Sergey Ryzhikov is pictured during electronics maintenance at the beginning of his shift aboard the International Space Station.

iss073e0917417 (Oct. 21, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Zena Cardman performs communications maintenance swapping radios and checking their peformance on a pair of spacesuits inside the International Space Station's Quest airlock.

ISS005-E-17390 (13 October 2002) --- Cosmonauts Valery G. Korzun (left), Expedition Five mission commander, Sergei Y. Treschev and astronaut Peggy A. Whitson, Expedition Five flight engineers, perform maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module on the International Space Station (ISS). Korzun and Treschev represent Rosaviakosmos.

ISS005-E-17392 (13 October 2002) --- Cosmonauts Valery G. Korzun (left), Expedition Five mission commander, Sergei Y. Treschev and astronaut Peggy A. Whitson, Expedition Five flight engineers, perform maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module on the International Space Station (ISS). Korzun and Treschev represent Rosaviakosmos.

S133-E-008319 (3 March 2011) --- NASA astronaut Michael Barratt (foreground), STS-133 mission specialist; and Scott Kelly, Expedition 26 commander, perform maintenance on the Carbon Dioxide Removal Assembly (CDRA) in the Air Revitalization 2 (AR2) rack in the Tranquility node of the International Space Station while space shuttle Discovery remains docked with the station. Photo credit: NASA or National Aeronautics and Space Administration

ISS005-E-17402 (13 October 2002) --- Cosmonauts Valery G. Korzun (left), Expedition Five mission commander, Sergei Y. Treschev and astronaut Peggy A. Whitson, Expedition Five flight engineers, perform maintenance on the Treadmill Vibration Isolation System (TVIS) in the Zvezda Service Module on the International Space Station (ISS). Korzun and Treschev represent Rosaviakosmos.

William Vardaman, mechanical technician with the Jacobs contracting team, performs engine maintenance on NASA's crawler-transporter 2 on March 26, 2019, in the crawler yard located in Kennedy Space Center's Launch Complex 39 area. Recent engine work included rebuilding the vehicles’ fuel pump assemblies and installing new oil pumps that will help minimize future wear. This is one of two crawler-transporters that carried rockets and spacecraft, including the Apollo/Saturn V and space shuttle, from the Vehicle Assembly Building to the launch pad. NASA’s Exploration Ground Systems oversaw modifications and upgrades to crawler-transporter 2 so it can carry the mobile launcher and NASA's Space Launch System rocket, topped by the Orion spacecraft, to Launch Pad 39B for Exploration Mission-1.