
Expedition 39 Flight Engineer Rick Mastracchio of NASA is carried in a chair to a medical tent just minutes after he and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Soyuz Commander Mikhail Tyurin of Roscosmos landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) answers questions from the media during a welcome home ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Wakata, Expedition 39 Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA landed in their Soyuz TMA-11M spacecraft just a few hours earlier near the town of Zhezkazgan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel wait for the Expedition 39 crew members to be extracted from the Soyuz TMA-11M spacecraft shortly after it landed with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Flight Engineer Rick Mastracchio of NASA is carried in a chair to a medical tent just minutes after he and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Soyuz Commander Mikhail Tyurin of Roscosmos landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Flight Engineer Rick Mastracchio of NASA answers questions from the media during a welcome home ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Mastracchio, Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Soyuz Commander Mikhail Tyurin of Roscosmos landed in their Soyuz TMA-11M spacecraft just a few hours earlier near the town of Zhezkazgan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Soyuz Commander Mikhail Tyurin of Roscosmos is seen wearing a ceremonial Kazakh hat and robe presented to him during a welcome home ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Tyurin, Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Flight Engineer Rick Mastracchio of NASA landed in their Soyuz TMA-11M spacecraft just a few hours earlier near the town of Zhezkazgan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Flight Engineer Rick Mastracchio of NASA is carried in a chair to a medical tent just minutes after he and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), center, and Soyuz Commander Mikhail Tyurin of Roscosmos landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Flight Engineer Rick Mastracchio of NASA rests in a chair outside the Soyuz Capsule just minutes after he and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Soyuz Commander Mikhail Tyurin of Roscosmos landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Flight Engineer Rick Mastracchio of NASA is helped of the Soyuz Capsule just minutes after he and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), center, and Soyuz Commander Mikhail Tyurin of Roscosmos landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

20140514_2BI6007 Expedition 38/39 Flight Engineer Mikhail Tyurin of the Russian Federal Space Agency (Roscosmos) is welcomed home upon his return at Chkalovsky Airport in Russia, Wednesday, May 14, 2014, a few hours after landing in the Soyuz TMA-11M spacecraft in Kazakhstan. Tyurin, along with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency and NASA Flight Engineer Rick Mastracchio (not pictured) completed 188 days in space following their launch in November, 2013. Photo Credit: (NASA/Bill Ingalls)

20140514_1BI5658 Expedition 38/39 Flight Engineer Mikhail Tyurin of the Russian Federal Space Agency (Roscosmos) is welcomed home upon his return at Chkalovsky Airport in Russia, Wednesday, May 14, 2014, a few hours after landing in the Soyuz TMA-11M spacecraft in Kazakhstan. Tyurin, along with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency and NASA Flight Engineer Rick Mastracchio (not pictured) completed 188 days in space following their launch in November, 2013. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Flight Engineer Rick Mastracchio of NASA, left, and NASA Flight Surgeon Joseph Schmid prepare to depart in a helicopter from the Soyuz landing site near the town of Zhezkazgan, Kazakhstan where Mastracchio and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Soyuz Commander Mikhail Tyurin of Roscosmos landed in their Soyuz TMA-11M spacecraft, Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Flight Engineer Rick Mastracchio of NASA, is helped out of a helicopter at the Karaganda Airport in Kazakhstan after the two hour flight from the Soyuz landing site near the town of Zhezkazgan, Kazakhstan where Mastracchio and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Soyuz Commander Mikhail Tyurin of Roscosmos landed in their Soyuz TMA-11M spacecraft, Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel race to the landing site as the Soyuz TMA-11M spacecraft lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel race to the landing site as the Soyuz TMA-11M spacecraft lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Ground personnel race to the landing site as the Soyuz TMA-11M spacecraft lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Ground personnel race to the landing site as the Soyuz TMA-11M spacecraft lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel prepare to exact the crew from the Soyuz TMA-11M spacecraft shortly after it landed with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

The last of the support personnel are seen working around the Soyuz TMA-11M spacecraft after it landed with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel prepare to exact the crew from the Soyuz TMA-11M spacecraft shortly after it landed with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Soyuz Commander Mikhail Tyurin of Roscosmos rests in a chair outside the Soyuz Capsule just minutes after he and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Flight Engineer Rick Mastracchio of NASA, landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) is helped of the Soyuz Capsule just minutes after he and Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA, landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) is helped of the Soyuz Capsule just minutes after he and Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA, landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel are seen working around the Soyuz TMA-11M spacecraft after it landed with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel prepare to exact the crew from the Soyuz TMA-11M spacecraft shortly after it landed with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Russian Search and Rescue helicopter team members clean the windows of their helicopter and other support personnel are seen working around the Soyuz TMA-11M spacecraft in the background after the capsule landed with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel prepare to exact the crew from the Soyuz TMA-11M spacecraft shortly after it landed with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) gives a thumbs up to his NASA and Russian partners as he is carried from the Soyuz Capsule just minutes after he and Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA, landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

A portable tent for Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA is used for the crew to remove their Russian Sokol suits and to have medical checks after the three landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Soyuz Commander Mikhail Tyurin of Roscosmos is helped out of the Soyuz Capsule just minutes after he and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Flight Engineer Rick Mastracchio of NASA, landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel prepare to exact the crew from the Soyuz TMA-11M spacecraft shortly after it landed with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) answers questions from the media during a welcome home ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Wakata, Expedition 39 Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA landed in their Soyuz TMA-11M spacecraft just a few hours earlier near the town of Zhezkazgan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Flight Engineer Rick Mastracchio of NASA is helped of the Soyuz Capsule just minutes after he and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), center, and Soyuz Commander Mikhail Tyurin of Roscosmos landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Soyuz Commander Mikhail Tyurin of Roscosmos, second from left, is welcomed home by family, friends, and government officials at the Chkalovsky airport outside Star City, Russia, Wednesday, May 14, 2014. Tyurin, Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Flight Engineer Rick Mastracchio of NASA landed in their Soyuz TMA-11M spacecraft earlier in the day near the town of Zhezkazgan, Kazakhstan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

NASA Flight Surgeon Joseph Schmid waits for the Expedition 39 crew members to be extracted from the Soyuz TMA-11M spacecraft shortly after it landed with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) is seen wearing a ceremonial Kazakh hat and robe and holding a matryoshka doll presented to him during a welcome home ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Wakata, Expedition 39 Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA landed in their Soyuz TMA-11M spacecraft just a few hours earlier near the town of Zhezkazgan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) answers questions from the media during a welcome home ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Wakata, Expedition 39 Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA landed in their Soyuz TMA-11M spacecraft just a few hours earlier near the town of Zhezkazgan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Family, friends, and government officials wait to welcome home Expedition 39 Soyuz Commander Mikhail Tyurin of Roscosmos at the Chkalovsky airport outside Star City, Russia, Wednesday, May 14, 2014. Tyurin, Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Flight Engineer Rick Mastracchio of NASA landed in their Soyuz TMA-11M spacecraft earlier in the day near the town of Zhezkazgan, Kazakhstan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Soyuz Commander Mikhail Tyurin of Roscosmos smiles during a welcome home ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Tyurin, Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Flight Engineer Rick Mastracchio of NASA landed in their Soyuz TMA-11M spacecraft just a few hours earlier near the town of Zhezkazgan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Soyuz Commander Mikhail Tyurin of Roscosmos answers questions from the media during a welcome home ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Tyurin, Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Flight Engineer Rick Mastracchio of NASA landed in their Soyuz TMA-11M spacecraft just a few hours earlier near the town of Zhezkazgan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Soyuz Commander Mikhail Tyurin of Roscosmos, left, departs a plane to a crowd of family, friends, and government officials at the Chkalovsky airport outside Star City, Russia, Wednesday, May 14, 2014. Tyurin, Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Flight Engineer Rick Mastracchio of NASA landed in their Soyuz TMA-11M spacecraft earlier in the day near the town of Zhezkazgan, Kazakhstan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-11M spacecraft is seen as it lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-11M spacecraft is seen as it lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-11M spacecraft is seen as it lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-11M spacecraft is seen as it lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-11M spacecraft is seen as it lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-11M spacecraft is seen as it lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-11M spacecraft is seen as it lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-11M spacecraft is seen as it lands with Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), left, Soyuz Commander Mikhail Tyurin of Roscosmos, center, and Flight Engineer Rick Mastracchio of NASA, sit in chairs outside the Soyuz TMA-11M capsule and pose for a group photo with the landing team after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) is helped of the Soyuz Capsule just minutes after he and Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA, landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Soyuz Commander Mikhail Tyurin of Roscosmos is carried in a chair to a medical tent just minutes after he and Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Flight Engineer Rick Mastracchio of NASA, landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) is carried in a chair to a medical tent just minutes after he and Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA, landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) is helped of the Soyuz Capsule just minutes after he and Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA, landed in their Soyuz TMA-11M spacecraft near the town of Zhezkazgan, Kazakhstan on Wednesday, May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 39 Flight Engineer Rick Mastracchio of NASA is presented with a box of Karaganda chocolates during a welcome home ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Mastracchio, Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), and Soyuz Commander Mikhail Tyurin of Roscosmos landed in their Soyuz TMA-11M spacecraft just a few hours earlier near the town of Zhezkazgan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Ceremonial Kazakh hats and robes are laid out to be presented to Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA at a welcome ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Matryoshka Dolls depicting Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), left, Soyuz Commander Mikhail Tyurin of Roscosmos, center, and Flight Engineer Rick Mastracchio of NASA are seen at a welcome ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

Japan Aerospace Exploration Agency (JAXA) President Naoki Okumura, background left, looks on as a boxes of Karaganda chocolates is presented to Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos, and Flight Engineer Rick Mastracchio of NASA at a welcome ceremony, Wednesday, May 14, 2014 at the Karaganda Airport in Kazakhstan. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the International Space Station where they served as members of the Expedition 38 and 39 crews. Photo Credit: (NASA/Bill Ingalls)

ISS040-E-000102 (14 May 2014) --- The Soyuz TMA-11M spacecraft departs from the International Space Station and heads for a landing near the town of Zhezkazgan, Kazakhstan on May 14, 2014. Japanese Aerospace Exploration Agency astronaut Koichi Wakata, Expedition 39 commander; along with Russian cosmonaut Mikhail Tyurin, Soyuz commander and Expedition 39 flight engineer, and NASA astronaut Rick Mastracchio, flight engineer, are returning to Earth after more than six months onboard the space station where they served as members of the Expedition 38 and 39 crews.

NASA astronaut Shane Kimbrough participates in a STEM in 30 piece about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough participates in a live broadcast on Periscope about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough gives Nikola a fist bump after a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough is seen after providing a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks to an audience member after giving a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks to an audience member after giving a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

Audience members raise their hands to ask NASA astronaut Shane Kimbrough a question about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

ISS041-E-000044 (10 Sept. 2014) --- The Soyuz TMA-12M spacecraft departs from the International Space Station and heads toward a landing in a remote area near the town of Zhezkazgan, Kazakhstan. NASA astronaut Steve Swanson, Expedition 40 commander; Russian cosmonaut Alexander Skvortsov, Soyuz commander and flight engineer; and Russian cosmonaut Oleg Artemyev, flight engineer, are returning from more than five months aboard the space station where they served as members of the Expedition 39 and 40 crews. Landing occurred at 10:23 p.m. (EDT), Sept. 10, 2014 (8:23 a.m., Sept. 11, Kazakh time).

ISS041-E-000005 (10 Sept. 2014) --- The Soyuz TMA-12M spacecraft departs from the International Space Station and heads toward a landing in a remote area near the town of Zhezkazgan, Kazakhstan. NASA astronaut Steve Swanson, Expedition 40 commander; Russian cosmonaut Alexander Skvortsov, Soyuz commander and flight engineer; and Russian cosmonaut Oleg Artemyev, flight engineer, are returning from more than five months aboard the space station where they served as members of the Expedition 39 and 40 crews. Landing occurred at 10:23 p.m. (EDT), Sept. 10, 2014 (8:23 a.m., Sept. 11, Kazakh time).

ISS041-E-000012 (10 Sept. 2014) --- The Soyuz TMA-12M spacecraft departs from the International Space Station and heads toward a landing in a remote area near the town of Zhezkazgan, Kazakhstan. NASA astronaut Steve Swanson, Expedition 40 commander; Russian cosmonaut Alexander Skvortsov, Soyuz commander and flight engineer; and Russian cosmonaut Oleg Artemyev, flight engineer, are returning from more than five months aboard the space station where they served as members of the Expedition 39 and 40 crews. Landing occurred at 10:23 p.m. (EDT), Sept. 10, 2014 (8:23 a.m., Sept. 11, Kazakh time).

ISS041-E-000017 (10 Sept. 2014) --- The Soyuz TMA-12M spacecraft departs from the International Space Station and heads toward a landing in a remote area near the town of Zhezkazgan, Kazakhstan. NASA astronaut Steve Swanson, Expedition 40 commander; Russian cosmonaut Alexander Skvortsov, Soyuz commander and flight engineer; and Russian cosmonaut Oleg Artemyev, flight engineer, are returning from more than five months aboard the space station where they served as members of the Expedition 39 and 40 crews. Landing occurred at 10:23 p.m. (EDT), Sept. 10, 2014 (8:23 a.m., Sept. 11, Kazakh time).

ISS041-E-000027 (10 Sept. 2014) --- The Soyuz TMA-12M spacecraft departs from the International Space Station and heads toward a landing in a remote area near the town of Zhezkazgan, Kazakhstan. NASA astronaut Steve Swanson, Expedition 40 commander; Russian cosmonaut Alexander Skvortsov, Soyuz commander and flight engineer; and Russian cosmonaut Oleg Artemyev, flight engineer, are returning from more than five months aboard the space station where they served as members of the Expedition 39 and 40 crews. Landing occurred at 10:23 p.m. (EDT), Sept. 10, 2014 (8:23 a.m., Sept. 11, Kazakh time).

ISS041-E-000047 (10 Sept. 2014) --- The Soyuz TMA-12M spacecraft departs from the International Space Station and heads toward a landing in a remote area near the town of Zhezkazgan, Kazakhstan. NASA astronaut Steve Swanson, Expedition 40 commander; Russian cosmonaut Alexander Skvortsov, Soyuz commander and flight engineer; and Russian cosmonaut Oleg Artemyev, flight engineer, are returning from more than five months aboard the space station where they served as members of the Expedition 39 and 40 crews. Landing occurred at 10:23 p.m. (EDT), Sept. 10, 2014 (8:23 a.m., Sept. 11, Kazakh time).

ISS041-E-000021 (10 Sept. 2014) --- The Soyuz TMA-12M spacecraft departs from the International Space Station and heads toward a landing in a remote area near the town of Zhezkazgan, Kazakhstan. NASA astronaut Steve Swanson, Expedition 40 commander; Russian cosmonaut Alexander Skvortsov, Soyuz commander and flight engineer; and Russian cosmonaut Oleg Artemyev, flight engineer, are returning from more than five months aboard the space station where they served as members of the Expedition 39 and 40 crews. Landing occurred at 10:23 p.m. (EDT), Sept. 10, 2014 (8:23 a.m., Sept. 11, Kazakh time).

ISS040-E-000005 (14 May 2014) --- The Soyuz TMA-11M spacecraft's docking probe is seen just after separation from the International Space Station. This photo was among the first group of images downlinked from the station following the start of duty for the three Expedition 40 crew members, who will be joined by three more crew members in approximately two weeks. With Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos and Flight Engineer Rick Mastracchio of NASA onboard, the Soyuz went on to land near the town of Zhezkazgan, Kazakhstan on May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the orbital outpost where they served as members of the Expedition 38 and 39 crews.

ISS040-E-000002 (14 May 2014) --- The Soyuz TMA-11M spacecraft's docking probe is seen just after separation from the International Space Station. This photo was among the first group of images downlinked from the station following the start of duty for the three Expedition 40 crew members, who will be joined by three more crew members in approximately two weeks. With Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA), Soyuz Commander Mikhail Tyurin of Roscosmos and Flight Engineer Rick Mastracchio of NASA onboard, the Soyuz went on to land near the town of Zhezkazgan, Kazakhstan on May 14, 2014. Wakata, Tyurin and Mastracchio returned to Earth after more than six months onboard the orbital outpost where they served as members of the Expedition 38 and 39 crews.

Audience members watch a live broadcast of Expedition 53 crew launching on the Soyuz rocket to the International Space Station during a presentation by Expedition 49/50 NASA astronaut Shane Kimbrough, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough presents a montage of photos and the Expedition 50 patch to the Arlington Tech High School who hosted his presentation on his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

ISS018-E-006084 (29 Oct. 2008) --- Kennedy Space Center and Cape Canaveral, Florida are featured in this image photographed by an Expedition 18 crewmember on the International Space Station. Launch complex 39, with pads A and B, is visible at right. The Vehicle Assembly Building (VAB) is visible at bottom center. The Shuttle Landing Facility appears as a long thin strip at left.

ISS015-E-13073 (20 June 2007) --- Kennedy Space Center and Cape Canaveral, Florida are featured in this image photographed by an Expedition 15 crewmember on the International Space Station. Launch complex 39, with pads A and B, is visible at top center. The Vehicle Assembly Building (VAB) is visible near center. The Shuttle Landing Facility appears as a long thin strip just below center.

NASA astronaut Shane Kimbrough poses for a photo with a an audience member after giving a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

An audience member wearing a spacesuit joins NASA astronaut Shane Kimbrough onstage for a photo during a presentation about Kimbrough's time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough presents Marty Kelsey, STEM in 30 host, Smithsonian National Air and Space Museum (NASM), a montage with photos and a patch from Expedition 50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

A young audience member listens while NASA astronaut Shane Kimbrough speaks about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Smithsonian's National Air and Space Museum in Washington. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

A young audience member examines the photo of NASA astronaut Shane Kimbrough during a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

NASA astronaut Shane Kimbrough calls on an audience member who has a question during a presentation about his time onboard the International Space Station (ISS) during Expeditions 49/50, Tuesday, September 12, 2017 at Arlington Career Center in Arlington, Virginia. During Expedition 50, Kimbrough completed four spacewalks for a total of 39 hours outside the ISS, and concluded his 173-day mission when he landed in a remote area near the town of Zhezkazgan, Kazakhstan in April 2017. Photo Credit: (NASA/Aubrey Gemignani)

ISS039-E-000707 (12 March 2014) --- This nadir picture of Galveston Island and its coastline on the Gulf of Mexico was taken by one of the Expedition 39 crew members aboard the International Space Station on March 12. It was among the first batch of Earth photographs downlinked near the beginning of the Expedition 38 mission. The clear weather and the 800mm focal length used to record the photo allow for very detailed "bird's eye" viewing of the storied city. The Interstate 45 causeway can be seen at bottom center, and Scholes International Airport is seen nearby. The Bolivar Island ferry landing is just out of frame at bottom left.

ISS015-E-08946 (21 May 2007) --- An 800-mm lens look from the International Space Station shows the Kennedy Space Center around midday on May 21, 2007. Astronaut Sunita L. Williams, Expedition 15 flight engineer, took the photo. The Space Shuttle Atlantis, scheduled for a launch no earlier than June 8, sits on Pad A (center frame) at launch complex 39. Pad B can be seen near bottom. The giant Vehicle Assembly Building (right center) and part of the Shuttle Landing Facility (right edge) are among other facilities seen in the digital frame.

ISS015-E-08952 (21 May 2007) --- An 800-mm lens look from the International Space Station shows the Kennedy Space Center around midday on May 21, 2007. Astronaut Sunita L. Williams, Expedition 15 flight engineer, took the photo. The Space Shuttle Atlantis, scheduled for a launch no earlier than June 8, sits on Pad A (center left) at launch complex 39. Pad B can be seen near bottom. The giant Vehicle Assembly Building (right center) and part of the Shuttle Landing Facility (lower right) are among other facilities seen in the digital frame.

ISS015-E-08950 (21 May 2007) --- An 800-mm lens look from the International Space Station shows the Kennedy Space Center around midday on May 21, 2007. Astronaut Sunita L. Williams, Expedition 15 flight engineer, took the photo. The Space Shuttle Atlantis, scheduled for a launch no earlier than June 8, sits on Pad A (near top center frame) at launch complex 39. Pad B can be seen near center frame. The giant Vehicle Assembly Building (upper right) and part of the Shuttle Landing Facility (near lower right edge) are among other facilities seen in the digital frame.

ISS015-E-08953 (21 May 2007) --- An 800-mm lens look from the International Space Station shows the Kennedy Space Center around midday on May 21, 2007. Astronaut Sunita L. Williams, Expedition 15 flight engineer, took the photo. The Space Shuttle Atlantis, scheduled for a launch no earlier than June 8, sits on Pad A (center frame) at launch complex 39. Pad B can be seen near bottom. The giant Vehicle Assembly Building (right center) and part of the Shuttle Landing Facility (lower right edge) are among other facilities seen in the digital frame

KENNEDY SPACE CENTER, FLA. -- At NASA Kennedy Space Center's Launch Complex 39, STS-123 Mission Specialist Garrett Reisman takes time out from driving practice of the M-113 armored personnel carrier to pose for a photo. The crew members of space shuttle Endeavour's STS-123 mission will each practice driving the M-113 in turn as part of his training on emergency egress procedures. Reisman will remain on the International Space Station as a flight engineer on the Expedition 16 and 17 crews. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The STS-123 crew is at Kennedy for a full launch dress rehearsal, known as the terminal countdown demonstration test or TCDT. Endeavour's seven astronauts arrived at Kennedy's Shuttle Landing Facility in their T-38 training aircraft between 10:45 and 10:58 a.m. EST. The terminal countdown demonstration test provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization and emergency training. Endeavour is targeted to launch March 11 at 2:28 a.m. EDT on a 16-day mission to the International Space Station. On the mission, Endeavour and its crew will deliver the first section of the Japan Aerospace Exploration Agency's Kibo laboratory and the Canadian Space Agency's two-armed robotic system, Dextre. Photo credit: NASA/Kim Shiflett