iss058e002219 (Jan. 5, 2019) --- Canadian Space Agency astronaut David Saint-Jacques works on U.S. spacesuit maintenance in the Quest airlock. A spacesuit with a patch of the flag of Canada on the left shoulder is seen behind Saint-Jacques. Spacewalks conducted in U.S. spacesuits are staged in Quest.

iss058e003901 (Jan. 15, 2019) --- Astronaut David Saint-Jacques of the Canadian Space Agency takes pictures of the Earth below from inside the International Space Station's "window to the world," the seven-windowed cupola.

iss058e013453 (Feb. 14, 2019) --- Astronauts (from left) Anne McClain and David Saint-Jacques are pictured in between a pair of spacesuits that are stowed and serviced inside the Quest airlock where U.S. spacewalks are staged.

iss058e002225 (Jan. 5, 2019) --- Astronaut David Saint-Jacques of the Canadian Space Agency becomes a barber aboard the International Space Station and trims Expedition 58 Commander Oleg Kononenko's hair with clippers attached to a vacuum hose.

iss058e015358 (Feb. 17, 2019) --- Astronauts (from left) Anne McClain and David Saint-Jacques are pictured in between a pair of spacesuits that are stowed and serviced inside the Quest airlock where U.S. spacewalks are staged.

iss058e026380 (Feb. 26, 2019) --- Astronaut David Saint-Jacques of the Canadian Space Agency is inside the U.S. Destiny laboratory module working on the Combustion Integrated Rack. Saint-Jacques replaced fuel flow controllers inside the device for the Advanced Combustion via Microgravity Experiments which are a set of five independent studies of gaseous flames.

iss058e004176 (Jan. 16, 2019) --- Astronaut David Saint-Jacques of the Canadian Space Agency performs orbital plumbing work as he removes and replaces hydraulic components in the Waste and Hygiene Compartment, also known as the International Space Station's toilet located in the Tranquility module.

iss058e011232 (Feb. 8, 2019) --- Canadian Space Agency astronaut David Saint-Jacques works inside the Unity module performing preventative maintenance on the Simplified Aid For EVA Rescue (SAFER) unit that attaches to U.S. spacesuits. The SAFER would be used to maneuver an astronaut back to the International Space Station in the unlikely event they became untethered during a spacewalk.

iss058e008801 (Jan. 31, 2019) --- Astronaut David Saint-Jacques of the Canadian Space Agency replaces a control unit and a radiometer inside the Combustion Integrated Rack's (CIR) ACME (Advanced Combustion via Microgravity Experiments) Chamber Insert. The replacement work in the chamber was done on the Unity module's work surface area. The CIR is a fuel and flame research rack housed inside the Destiny laboratory module.

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), right, who is in quarantine, makes a heart with his hands for his son, at the conclusion of a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) is seen during a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA, into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 Flight Engineer David Saint-Jacques answers a question during a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Saint-Jacques, Flight Engineer Anne McClain of NASA, and Soyuz Commander Oleg Kononenko of Roscosmos, into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) answers a question during a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) speaks from behind glass, while in quarantine, during the State Commission meeting to approve the Soyuz launch of Expedition 58 to the International Space Station, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), left, and backup crew member Flight Engineer Andrew Morgan of NASA, speak during a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Expedition 58 prime crew members, Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), right, who is in quarantine, puts his hands up to the glass to meet his son at the conclusion of a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) has his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Flight Engineer Anne McClain of NASA, and Soyuz Commander Oleg Kononenko of Roscosmos into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), left, blows a kiss to his family during a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Expedition 58 prime crew members, Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) says farewell to his family through the window of the bus before heading to the launch pad to board the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 59 Canadian Space Agency astronaut David Saint-Jacques is carried to a medical tent shortly after he, NASA astronaut Anne McClain, and Roscosmos cosmonaut Oleg Kononenko landed in their Soyuz MS-11 spacecraft near the town of Zhezkazgan, Kazakhstan on Tuesday, June 25, 2019 Kazakh time (June 24 Eastern time). McClain, Saint-Jacques, and Kononenko are returning after 204 days in space where they served as members of the Expedition 58 and 59 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), blows kisses to family and friends as he departs the Cosmonaut Hotel to suit-up for his Soyuz launch to the International Space Station on Monday, Dec. 3, 2018 in Baikonur, Kazakhstan. Launch of the Soyuz rocket is Dec. 3 and will send Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA on a six and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 Flight Engineer David Saint-Jacques answers a question during a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. He is seen with fellow crewmates Flight Engineer Anne McClain of NASA, left, and Soyuz Commander Oleg Kononenko of Roscosmos, center. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Kononenko, McClain, and Saint-Jacques into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 prime crew members, left to right, Flight Engineer Anne McClain of NASA, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) pose for a photo at the conclusion of a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Kononenko, McClain, and Saint-Jacques into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 crew members, Soyuz Commander Oleg Kononenko of Roscosmos, left, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), greet family and friends as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station on Monday, Dec. 3, 2018 in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will send Kononenko, McClain, and Saint-Jacques on a six and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

NASA, CSA, Roscosmos, and Russian Search and Recovery Forces meet at the Cosmonaut Hotel in Karaganda, Kazakhstan to discuss the readiness for the landing of Expedition 59 crew members Anne McClain of NASA, David Saint-Jacques of the Canadian Space Agency, and Oleg Kononenko of Roscosmos, Sunday, June 23, 2019. McClain, Saint-Jacques, and Kononenko are returning after 204 days in space where they served as members of the Expedition 58 and 59 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

From left to right, Expedition 58 Flight Engineer Anne McClain of NASA, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) take a selfie, while in quarantine, at the conclusion of a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Kononenko, McClain, and Saint-Jacques into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

iss059e117393 (6/23/2019) --- Canadian Space Agency (CSA) astronaut David Saint-Jacques is photographed during VEG-04 Water Check and Mass Measurement Device Operations. Saint-Jacques is watering the plants if needed and looking for any leaves that have broken off. The research of Veg-04A focuses on the impact of light quality and fertilizer on leafy crop growth for a 28-day grow-out.

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) puts his hands up to the glass, to meet his sons while in quarantine, after having his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA, and into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) has his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Flight Engineer Anne McClain of NASA, and Soyuz Commander Oleg Kononenko of Roscosmos into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: ((GCTC/NASA/Andrey Shelepin))

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) is helped up after completing his Russian Sokol suit pressure check in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Flight Engineer Anne McClain of NASA, and Soyuz Commander Oleg Kononenko of Roscosmos into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) poses for a photo while he waits to have his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Flight Engineer Anne McClain of NASA, and Soyuz Commander Oleg Kononenko of Roscosmos into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) blows kisses to his family while waiting to have his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Flight Engineer Anne McClain of NASA, and Soyuz Commander Oleg Kononenko of Roscosmos into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 Soyuz Commander Oleg Kononenko of Roscosmos, left, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) speak to family and friends after having their Russian Sokol suits pressure checked in preparation for their launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Kononenko, Saint-Jacques, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) is helped into his Russian Sokol suit as he and fellow crewmates, Flight Engineer Anne McClain of NASA and Soyuz Commander Oleg Kononenko of Roscosmos prepare for their Soyuz launch to the International Space Station, on Monday, Dec. 3, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Kononenko, McClain, and Saint-Jacques into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: ((GCTC/NASA/Andrey Shelepin))

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) puts his hands up to the glass, to meet his daughter, while in quarantine, after having his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA, and into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 58 crew members, Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), left, Soyuz Commander Oleg Kononenko of Roscosmos, center, and Flight Engineer Anne McClain of NASA, right, say farewell to family and friends as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station on Monday, Dec. 3, 2018 in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will send Kononenko. McClain, and Saint-Jacques on a six and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) waits to have his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Flight Engineer Anne McClain of NASA, and Soyuz Commander Oleg Kononenko of Roscosmos into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) answers a question during a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. He is seen with fellow crewmate Soyuz Commander Oleg Kononenko of Roscosmos, left, and backup crew member Flight Engineer Andrew Morgan of NASA, right. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Saint-Jacques, Kononenko, and Flight Engineer Anne McClain of NASA, into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) performs the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch in a Soyuz rocket with fellow crewmates, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA, Monday, Dec. 3, 2018, in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, McClain, and Kononenko into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) is helped into his Russian Sokol suit as he and fellow crewmates, Flight Engineer Anne McClain of NASA and Soyuz Commander Oleg Kononenko of Roscosmos prepare for their Soyuz launch to the International Space Station, on Monday, Dec. 3, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Kononenko, McClain, and Saint-Jacques into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (GCTC/NASA/Andrey Shelepin)

Expedition 58 Soyuz Commander Oleg Kononenko of Roscosmos, center, answers a question during a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. He is seen with fellow crewmates Flight Engineer Anne McClain of NASA, left, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), right. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Kononenko, McClain, and Saint-Jacques into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) poses for a photo after performing the traditional door signing at the Cosmonaut Hotel prior to departing the hotel for launch in a Soyuz rocket with fellow crewmates, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA, Monday, Dec. 3, 2018, in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, McClain, and Kononenko into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 59 astronaut David Saint-Jacques of the Canadian Space Agency (CSA) is helped out of the Soyuz MS-11 spacecraft just minutes after he, NASA astronaut Anne McClain, and Roscosmos cosmonaut Oleg Kononenko, landed in a remote area near the town of Zhezkazgan, Kazakhstan on Tuesday, June 25, 2019 Kazakh time (June 24 Eastern time). McClain, Saint-Jacques, and Kononenko are returning after 204 days in space where they served as members of the Expedition 58 and 59 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) is seen after being helped into his Russian Sokol suit as he and fellow crewmates, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA prepare for their Soyuz launch to the International Space Station, on Monday, Dec. 3, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Kononenko, and McClain into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (GCTC/NASA/Andrey Shelepin)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) is helped into his Russian Sokol suit as he and fellow crewmates, Flight Engineer Anne McClain of NASA and Soyuz Commander Oleg Kononenko of Roscosmos prepare for their Soyuz launch to the International Space Station, on Monday, Dec. 3, 2018 at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Kononenko, McClain, and Saint-Jacques into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: ((GCTC/NASA/Andrey Shelepin))

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) has his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Flight Engineer Anne McClain of NASA, and Soyuz Commander Oleg Kononenko of Roscosmos into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 59 Canadian Space Agency astronaut David Saint-Jacques is carried to a medical tent shortly after he, NASA astronaut Anne McClain, and Roscosmos cosmonaut Oleg Kononenko landed in their Soyuz MS-11 spacecraft near the town of Zhezkazgan, Kazakhstan on Tuesday, June 25, 2019 Kazakh time (June 24 Eastern time). McClain, Saint-Jacques, and Kononenko are returning after 204 days in space where they served as members of the Expedition 58 and 59 crews onboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) speaks to family and friends after having his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

jsc2018e085901 (Oct. 3, 2018) --- Expedition 57 backup crew members Oleg Kononenko of Roscosmos, top, and David Saint-Jacques of the Canadian Space Agency, bottom, conduct tests of their vestibular system on tilt tables, Wednesday, Oct. 3, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Alexey Ovchinin of Roscosmos and Nick Hague of NASA are scheduled to launch on Oct. 11 onboard the Soyuz MS-10 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 57 backup crewmember David Saint-Jacques of the Canadian Space Agency is seen during a press conference, Wednesday, Oct. 10, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 57 Flight Engineer Nick Hague of NASA and Flight Engineer Alexey Ovchinin of Roscosmos are scheduled to launch on October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 57 backup crewmember David Saint-Jacques of the Canadian Space Agency gets his hair cut, Tuesday, Oct. 9, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 57 Flight Engineer Nick Hague of NASA and Flight Engineer Alexey Ovchinin of Roscosmos are scheduled to launch onboard a Soyuz rocket October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 57 backup crewmember David Saint-Jacques of the Canadian Space Agency gets his hair cut, Tuesday, Oct. 9, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 57 Flight Engineer Nick Hague of NASA and Flight Engineer Alexey Ovchinin of Roscosmos are scheduled to launch onboard a Soyuz rocket October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 57 backup crewmember David Saint-Jacques of the Canadian Space Agency is seen during a press conference, Wednesday, Oct. 10, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 57 Flight Engineer Nick Hague of NASA and Flight Engineer Alexey Ovchinin of Roscosmos are scheduled to launch on October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 57 backup crewmember David Saint-Jacques of the Canadian Space Agency gets his hair cut, Tuesday, Oct. 9, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 57 Flight Engineer Nick Hague of NASA and Flight Engineer Alexey Ovchinin of Roscosmos are scheduled to launch onboard a Soyuz rocket October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 57 backup crewmember David Saint-Jacques of the Canadian Space Agency gets his hair cut, Tuesday, Oct. 9, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 57 Flight Engineer Nick Hague of NASA and Flight Engineer Alexey Ovchinin of Roscosmos are scheduled to launch onboard a Soyuz rocket October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 58 Flight Engineer David Saint-Jacques is walked to the Soyuz vehicle for launch by Sylvain Laporte, president, Canadian Space Agency (CSA), second from right, Monday, Dec. 3, 2018 in Baikonur, Kazakhstan. Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA, will spend the next six and a half months onboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 crew, from left to right, Flight Engineer Anne McClain of NASA, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) are seen just after being helped into their Russian Sokol suits in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry McClain, Kononenko, and Saint-Jacques into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: ((GCTC/NASA/Andrey Shelepin))

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), top, Flight Engineer Anne McClain of NASA, center, and Soyuz Commander Oleg Kononenko of Roscosmos, bottom, wave farewell prior to boarding the Soyuz MS-11 spacecraft for launch, Monday, Dec. 3, 2018 in Baikonur, Kazakhstan. Kononenko. McClain, and Saint-Jacques will spend the next six and a half months onboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 crew, from left to right, Flight Engineer Anne McClain of NASA, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) speak to family and friends after having their Russian Sokol suits pressure checked in preparation for their launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Kononenko, Saint-Jacques, and McClain into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 58 crew members, Flight Engineer Anne McClain of NASA, left, Soyuz Commander Oleg Kononenko of Roscosmos, center, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), right, wave farewell to family and friends as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station on Monday, Dec. 3, 2018 in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will send Kononenko, McClain, and Saint-Jacques on a six and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 crew, from top to bottom, Flight Engineer Anne McClain of NASA, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) speak to family and friends after having their Russian Sokol suits pressure checked in preparation for their launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Kononenko, Saint-Jacques, and McClain into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 crew, from top right to bottom right, Flight Engineer Anne McClain of NASA, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) speak to leadership of Roscosmos, NASA, and the CSA after having their Russian Sokol suits pressure checked in preparation for their launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Kononenko, Saint-Jacques, and McClain into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 58 crew, from top to bottom, Flight Engineer Anne McClain of NASA, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) speak to family and friends after having their Russian Sokol suits pressure checked in preparation for their launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Kononenko, Saint-Jacques, and McClain into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 crew members, Flight Engineer Anne McClain of NASA, left, Soyuz Commander Oleg Kononenko of Roscosmos, center, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), right, wave farewell to family and friends as they depart the Cosmonaut Hotel to suit-up for their Soyuz launch to the International Space Station on Monday, Dec. 3, 2018 in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will send Kononenko, McClain, and Saint-Jacques on a six and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 crew, from top right to bottom right, Flight Engineer Anne McClain of NASA, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) walk out of building 254 to meet with leadership of Roscosmos after having their Russian Sokol suits pressure checked in preparation for their launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Kononenko, Saint-Jacques, and McClain into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 58 Flight Engineer Anne McClain of NASA, left, receives the traditional blessing from a Russian Orthodox priest at the Cosmonaut Hotel prior to her launch on the Soyuz rocket to the International Space Station (ISS), Monday, Dec. 3, 2018, in Baikonur, Kazakhstan. She and fellow crewmates, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) will spend the next six and a half months living and working aboard the ISS. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 57 Flight Engineer Nick Hague of NASA gets his hair cut as Expedition 57 backup crewmember David Saint-Jacques of the Canadian Space Agency waits his turn, Tuesday, Oct. 9, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Hague and Expedition 57 Flight Engineer Alexey Ovchinin of Roscosmos are scheduled to launch onboard a Soyuz rocket October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 58 Soyuz Commander Oleg Kononenko of Roscosmos, center, receives the traditional blessing from a Russian Orthodox priest at the Cosmonaut Hotel prior to his launch on the Soyuz rocket to the International Space Station (ISS), Monday, Dec. 3, 2018, in Baikonur, Kazakhstan. He and fellow crewmates, Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) and Flight Engineer Anne McClain of NASA will spend the next six and a half months living and working aboard the ISS. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), right, receives the traditional blessing from a Russian Orthodox priest at the Cosmonaut Hotel prior to his launch on the Soyuz rocket to the International Space Station (ISS), Monday, Dec. 3, 2018, in Baikonur, Kazakhstan. He and fellow crewmates, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA, will spend the next six and a half months living and working aboard the ISS. Photo Credit: (NASA/Aubrey Gemignani)

iss059e113779 (June 18, 2019) --- Canadian Space Agency astronaut David Saint-Jacques checks plants being grown for the Veg-04A space botany experiment taking place inside the International Space Station's Columbus laboratory module from the European Space Agency. The study focuses on the impact of light quality and fertilizer on leafy crop growth for a 28-day grow-out, microbial food safety, nutritional value, taste acceptability by the crew, and the overall behavioral health benefits of having plants and fresh food in space.

iss058e003984 (1/16/2019) --- Canadian Space Agency (CSA) astronaut David Saint-Jacques demonstrates the Bio-Monitor, a Canadian technology, which is utilized in the Autonomous Health Monitoring for Adaption Assessment on Long Range Missions Using Big Data Analytic.(Space Health) study. The innovative smart shirt system captures the astronauts' vital signs, and the data is used to assess the impact of spaceflight on the cardiovascular system. Image courtesy of CSA/NASA.

iss058e005160 (1/21/2019) --- A view of Canadian Space Agency (CSA) astronaut David Saint-Jacques setting up the Z-CAM V1 Pro Cinematic camera for the ISS Experience payload. The International Space Station Experience (ISS Experience) creates a virtual reality film documenting daily life aboard the space station. The 8- to 10-minute film created from footage taken during the six-month investigation covers different aspects of crew life, conducting science aboard the station, and the international partnerships involved.

iss059e072518 (5/23/2019) --- Canadian Space Agency (CSA) astronaut David Saint-Jacques is photographed working with the free-flying Astrobee cube named Bumble and the docking station onboard the International Space Station (ISS). Astrobee consists of three self-contained, free flying robots and a docking station for use inside the ISS. It is an autonomous free flyer powered by fans and operates in the entire U.S. Operating Segment (USOS) using vision-based navigation. The autonomous robots are operated remotely from the ground.

jsc2018e097267 - With the statue of Vladimir Lenin serving as a backdrop, Expedition 58 crewmembers Anne McClain of NASA (left), Oleg Kononenko of Roscosmos (center) and David Saint-Jacques of the Canadian Space Agency (right) answer reporters’ questions Nov. 19 at the Gagarin Cosmonaut Training Center in Star City, Russia before boarding a plane to fly to their launch site in Baikonur, Kazakhstan. McClain, Kononenko and Saint-Jacques will launch Dec. 3 on the Soyuz MS-11 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-and-a-half month mission on the International Space Station. NASA/Sarah Volkman

jsc2018e085900 (Oct. 3, 2018) --- Expedition 57 backup crew member David Saint-Jacques of the Canadian Space Agency takes a spin in a rotating chair to test his vestibular system as part of pre-launch activities, Wednesday, Oct. 3, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Alexey Ovchinin of Roscosmos and Nick Hague of NASA are scheduled to launch on Oct. 11 onboard the Soyuz MS-10 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

jsc2018e085894 (Oct. 3, 2018) --- Expedition 57 backup crew members Oleg Kononenko of Roscosmos, left, and David Saint-Jacques of the Canadian Space Agency, right, practice rendezvous and docking procedures on a laptop training simulator as part of their pre-launch preparations, Wednesday, Oct. 3, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Alexey Ovchinin of Roscosmos and Nick Hague of NASA are scheduled to launch on Oct. 11 onboard the Soyuz MS-10 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 58 prime crew members, left to right, Flight Engineer Anne McClain of NASA, Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), and Soyuz Commander Oleg Kononenko of Roscosmos, pose for a photo with backup crew members Soyuz Commander Alexander Skvortsov of Roscosmos, Flight Engineer Luca Parmitano of ESA (European Space Agency), and Flight Engineer Andrew Morgan of NASA at the conclusion of a press conference, Sunday, Dec. 2, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will carry Kononenko, McClain, and Saint-Jacques into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani).

Expedition 58 backup crew member Luca Parmitano of ESA (European Space Agency) speaks with Expedition 58 prime crew member Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) while he waits to have his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 58 backup crew member Luca Parmitano of ESA (European Space Agency) fist bumps Expedition 58 prime crew member Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) while he waits to have his Russian Sokol suit pressure checked in preparation for his launch aboard the Soyuz MS-11 spacecraft on Monday, Dec. 3, 2018, at the Baikonur Cosmodrome in Kazakhstan. Launch of the Soyuz rocket is scheduled for the same day and will carry Saint-Jacques, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer Anne McClain of NASA into orbit to begin their six and a half month mission on the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

iss059e034721 (4/23/2019) --- Canadian Space Agency (CSA) astronaut David Saint-Jacques is photographed in front of the Microgravity Science Glovebox (MSG) during the installation of the Space Fibers experiment hardware into the MSG work volume. Manufacturing Fiber Optic Cable in Microgravity (Space Fibers) evaluates a method for producing fiber optic cable from a blend of zirconium, barium, lanthanum, sodium and aluminum, called ZBLAN, in space. ZBLAN produces glass one hundred times more transparent than silica-based glass, exceptional for fiber optics. Microgravity suppresses two mechanisms that commonly degrade fiber, and previous studies showed improved properties in fiber drawn in microgravity compared to that fabricated on the ground.

iss058e015664 (2/19/2019) --- NASA astronaut Anne McClain and Canadian Space Agency (CSA) astronaut David Saint-Jacques shown during the installation of the Robotics Refueling Mission (RRM)-3 on the JEM Airlock slide table in the KIBO module aboard the International Space Station (ISS). Robotic Refueling Mission 3 (RRM3) demonstrates the first transfer and long term storage of liquid methane, a cryogenic fluid, in microgravity. The ability to replenish and store cryogenic fluids, which can function as a fuel or coolant, can help enable long duration journeys to destinations like the Moon and Mars.

Expedition 58 crew, Flight Engineer Anne McClain of NASA, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) pose for a photo with senior officials of Roscosmos, NASA, and the Canadian Space Agency (CSA) after arriving at the launch pad by bus to begin boarding the Soyuz MS-11 spacecraft for launch, Monday, Dec. 3, 2018 in Baikonur, Kazakhstan. Kononenko, McClain, and Saint-Jacques will spend the next six and a half months onboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Vice President Mike Pence, right, and NASA Administrator Jim Bridenstine, left, speak with Expedition 58 flight engineer Anne McClain of NASA, and flight engineer David Saint-Jacques of the Canadian Space Agency (CSA) who are onboard the International Space Station, Wednesday, March 6, 2019 from the Space Operations Center at NASA Headquarters in Washington. Vice President Pence and Administrator Bridenstine spoke with the astronauts about the arrival of SpaceX's Crew Dragon spacecraft at the International Space Station. Photo Credit: (NASA/Joel Kowsky)

Expedition 58 Flight Engineer Anne McClain of NASA blows a kiss to friends and family before boarding a bus to suit-up for her Soyuz launch to the International Space Station on Monday, Dec. 3, 2018 in Baikonur, Kazakhstan. Launch of the Soyuz rocket is scheduled for Dec. 3 and will send McClain, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA) on a six and a half month mission aboard the International Space Station. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 57 backup crewmember Oleg Kononenko of Roscosmos, left, and David Saint-Jacques of the Canadian Space Agency pose for a photograph by the Soyuz TM-10 spacecraft after it rolled out to the launch pad, Tuesday, Oct. 9, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 57 crewmembers Nick Hague of NASA and Alexey Ovchinin of Roscosmos are scheduled to launch on October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 57 prime crew members Nick Hague, left, Alexey Ovchinin, second from left, are seen in quarantine with backup crew members Oleg Kononenko, and David Saint-Jacques, right, during a press conference, Wednesday, Oct. 10, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Hague and Ovchinin are scheduled to launch on October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

From left to right, Expedition 58 Flight Engineer Anne McClain of NASA, Soyuz Commander Oleg Kononenko of Roscosmos, and Flight Engineer David Saint-Jacques of the Canadian Space Agency (CSA), receive the traditional blessing from a Russian Orthodox priest at the Cosmonaut Hotel prior to their launch on the Soyuz rocket to the International Space Station (ISS), Monday, Dec. 3, 2018, in Baikonur, Kazakhstan. They will spend the next six and a half months living and working aboard the ISS. Photo Credit: (NASA/Aubrey Gemignani)

Expedition 57 prime crew members Nick Hague, left, Alexey Ovchinin, second from left, are seen with backup crew members Oleg Kononenko, and David Saint-Jacques, right, following a press conference, Wednesday, Oct. 10, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Hague and Ovchinin are scheduled to launch on October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

jsc2018e097269 - At the Gagarin Cosmonaut Training Center in Star City, Russia, Expedition 58 crewmember David Saint-Jacques of the Canadian Space Agency (right) walks with his wife, Veronique, to a waiting bus Nov. 19 that will take him and his crewmates to a nearby airfield for a flight to their launch site in Baikonur, Kazakhstan. Saint-Jacques, Anne McClain of NASA and Oleg Kononenko of Roscosmos will launch Dec. 3 on the Soyuz MS-11 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-and-a-half month mission on the International Space Station. NASA/Sarah Volkman

iss058e001568 (Dec. 29, 2018) --- Expedition 58 crew members gather inside the Zvezda service module for a crew portrait. From left are, NASA astronaut Anne McClain, Roscosmos cosmonaut Oleg Kononenko and Canadian Space Agency astronaut David Saint-Jacques.

jsc2018e085907 (Oct. 3, 2018) --- Expedition 57 backup and prime crew members pose for pictures in front of a model of a Soyuz rocket, Wednesday, Oct. 3, 2018 at the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan. From left are backup crew members David Saint-Jacques of the Canadian Space Agency and Oleg Kononenko of Roscosmos and prime crew members Alexey Ovchinin of Roscosmos and Nick Hague of NASA. Ovchinin and Hague are scheduled to launch on Oct. 11 onboard the Soyuz MS-10 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 57 prime crew members Nick Hague, left, Alexey Ovchinin, second from left, are seen in quarantine behind glass with backup crew members Oleg Kononenko, and David Saint-Jacques, right, during the State Commission meeting to approve the Soyuz launch of Expedition 57 to the International Space Station, Wednesday, Oct. 10, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Hague and Ovchinin are scheduled to launch on October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

jsc2018e085906 (Oct. 3, 2018) --- Expedition 57 backup and prime crew members pose for pictures flanking a model of a Soyuz rocket, Wednesday, Oct. 3, 2018 at the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan. From left are backup crew members David Saint-Jacques of the Canadian Space Agency and Oleg Kononenko of Roscosmos and prime crew members Alexey Ovchinin of Roscosmos and Nick Hague of NASA. Ovchinin and Hague are scheduled to launch on Oct. 11 onboard the Soyuz MS-10 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 57 prime crew members Nick Hague, left, Alexey Ovchinin, second from left, are seen in quarantine with backup crew members Oleg Kononenko, and David Saint-Jacques, right, during the State Commission meeting to approve the Soyuz launch of Expedition 57 to the International Space Station, Wednesday, Oct. 10, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Hague and Ovchinin are scheduled to launch on October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

jsc2018e085895 (Oct. 3, 2018) --- Expedition 57 prime crew member Alexey Ovchinin of Roscosmos, left, plays backgammon with backup crew member David Saint-Jacques of the Canadian Space Agency as prime crew member Nick Hague of NASA looks on during the traditional pre-launch ceremonies, Wednesday, Oct. 3, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Ovchinin and Hague are scheduled to launch on Oct. 11 onboard the Soyuz MS-10 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

jsc2018e085892 (Oct. 3, 2018) --- Expedition 57 backup crew members Oleg Kononenko of Roscosmos, left, and David Saint-Jacques of the Canadian Space Agency, right, review training documents with a Gagarin Cosmonaut Training Center instructor as they prepare for their upcoming launch, Wednesday, Oct. 3, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Alexey Ovchinin of Roscosmos and Nick Hague of NASA are scheduled to launch on Oct. 11 onboard the Soyuz MS-10 spacecraft from the Baikonur Cosmodrome in Kazakhstan for a six-month mission on the International Space Station. Photo Credit: (NASA/Victor Zelentsov)

Expedition 56 backup crew member David Saint-Jacques of the Canadian Space Agency is seen during the State Commission meeting to approve the Soyuz launch of Expedition 56 to the International Space Station, Tuesday, June 5, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, Serena Auñón-Chancellor of NASA, and Alexander Gerst of ESA (European Space Agency) are scheduled to launch to the International Space Station aboard the Soyuz MS-09 spacecraft on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 56 backup crew member David Saint-Jacques of the Canadian Space Agency takes a selfie as the Soyuz rocket arrives as the launch pad after being rolled out by train, Monday, June 4, 2018 at the Baikonur Cosmodrome in Kazakhstan. Expedition 56 Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) are scheduled to launch aboard their Soyuz MS-09 spacecraft at 7:12 a.m. Eastern time (5:12 p.m. Baikonur time), on Wednesday, June 6. Photo Credit: (NASA/Joel Kowsky)

Expedition 57 prime crew members Nick Hague, left, Alexey Ovchinin, second from left, are seen in quarantine behind glass with backup crew members Oleg Kononenko, and David Saint-Jacques, right, during the State Commission meeting to approve the Soyuz launch of Expedition 57 to the International Space Station, Wednesday, Oct. 10, 2018 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Hague and Ovchinin are scheduled to launch on October 11 and will spend the next six months living and working aboard the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 56 backup crewmembers David Saint-Jacques of the Canadian Space Agency, left, and Anne McClain of NASA are seen as prime crewmembers Soyuz Commander Sergey Prokopyev of Roscosmos, flight engineer Serena Auñón-Chancellor of NASA, and flight engineer Alexander Gerst of ESA (European Space Agency) prepare to have their Russian Sokol suits pressure checked in preparation for launch aboard the Soyuz MS-09 spacecraft, Wednesday, June 6, 2018 at the Baikonur Cosmodrome in Kazakhstan. launched aboard the Soyuz MS-09 spacecraft at 7:12am EDT (5:12pm Baikonur time) on June 6 to begin their journey to the International Space Station. Photo Credit: (NASA/Joel Kowsky)