STAR CITY, RUSSIA - Expedition Six Flight Engineer Nikolai Budarin (left), Commander Ken Bowersox (center), and NASA ISS Science Officer Don Pettit (right) pose for photos at a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. The Expedition Six crew spent 161 days in space, 159 manning the International Space Station. Photo Credit: NASA/Bill Ingalls

STAR CITY, RUSSIA - Expedition Six NASA ISS Science Officer Don Pettit speaks during a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. The Expedition Six crew spent 161 days in space, 159 manning the International Space Station. Photo Credit: NASA/Bill Ingalls

STAR CITY, RUSSIA - Expedition Six Flight Engineer Nikolai Budarin speaks during a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. The Expedition Six crew spent 161 days in space, 159 manning the International Space Station. Photo Credit: NASA/Bill Ingalls

STAR CITY, RUSSIA - Expedition Six Commander Ken Bowersox speaks at a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. The Expedition Six crew spent 161 days in space, 159 manning the International Space Station. Photo Credit: NASA/Bill Ingalls

STAR CITY, RUSSIA - Expedition Six Flight Engineer Nikolai Budarin (left), Commander Ken Bowersox (center), and NASA ISS Science Officer Don Pettit (right) answer questions during a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. The Expedition Six crew spent 161 days in space, 159 manning the International Space Station. Photo Credit: NASA/Bill Ingalls

STAR CITY, RUSSIA - Expedition Six Flight Engineer Nikolai Budarin (large), Commander Ken Bowersox (center), and NASA ISS Science Officer Don Pettit (right) pose for photos at a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. The Expedition Six crew spent 161 days in space, 159 manning the International Space Station. Photo Credit: NASA/Bill Ingalls

European Space Agency astronaut Roberto Vittori, of Italy, waves to well-wishers upon departure from the Gagarin Cosmonaut Training Center training base, Saturday, April 9, 2005, in Star City, Russia. Vittori will spend eight days on the Station under a commercial contract between ESA and the Russian Federal Space Agency. Photo Credit: (NASA/Bill Ingalls)

May 6, 2003. Star City, Russia. Expedition Six Commander Ken Bowersox speaks at a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. Photo Credit: "NASA/Bill Ingalls"

May 6, 2003. Star City, Russia. Expedition Six NASA ISS Science Officer Don Pettit speaks during a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. Photo Credit: "NASA/Bill Ingalls"

The crew return bus pulls away from the Gargarin Cosmonaut Training Center's airplane in Star City, Russia. The Soyuz capsule carrying Expedition 9 Flight Engineer Michael Fincke, Expedition 9 Commander Gennady Padalka and Russian Space Forces cosmonaut Yuri Shargin landed approximately 85 kilometers northeast of Arkalyk in northern Kazakhstan, Sunday, October 24, 2004. Photo Credit: (NASA/Bill Ingalls)

October 12, 2003, Star City, Russia. Expedition 8 Commander Michael Foale (right) and Expedition 8 Soyuz Commander and Flight Engineer Alexander Kaleri (center) are joined by European Space Agency Astronaut Pedro Duque of Spain at the Gagarin Cosmonaut Training Center outside Moscow to pose for pictures prior to their departure for the Baikonur Cosmodrome in Kazakhstan for the October 18th launch on a Soyuz rocket to the International Space Station. Photo Credit: "NASA/Bill Ingalls"

Renita Fincke, left, watches her husband, NASA astronaut Michael Fincke and Expedition 9 Flight Engineer depart from the crew bus while holding her 4 month-old baby Tarali Fincke, Sunday, October 24, 2004 in Star City, Russia. Astronaut Terry Virts helps by holding Chandra Fincke. Photo Credit: (NASA/Bill Ingalls)

Expedition 10 Flight Engineer Salizhan Sharipov, far right, Expedition 10 Commander Leroy Chiao and European Space Agency astronaut Roberto Vittori, third from right, are treated to a traditional salt and bread welcoming at Star City, Russia, Monday, April 25, 2005. The crew brought their Soyuz TMA-5 capsule to a pre-dawn landing April 25 northeast of the town of Arkalyk in Kazakhstan to wrap up a six-month mission aboard the International Space Station for Chiao and Sharipov, and a ten-day mission for Vittori, who flew under a commercial contract between ESA and the Russian Federal Space Agency. Photo Credit: (NASA/Bill Ingalls)

May 6, 2003. Star City, Russia. Expedition Six Flight Engineer Nikolai Budarin (L), Commander Ken Bowersox (C), and NASA ISS Science Officer Don Pettit (R) pose for photos at a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. Photo Credit: "NASA/Bill Ingalls"

Expedition 10 Commander Leroy Chiao, left, is greeted by his wife after arriving in Star City, Russia from Kazakhstan, Monday, April 25, 2005. The Expedition 10 crew brought their Soyuz TMA-5 capsule to a pre-dawn landing April 25 northeast of the town of Arkalyk to wrap up a six-month mission aboard the International Space Station for Chiao and Sharipov, and a ten-day mission for Vittori, who flew under a commercial contract between ESA and the Russian Federal Space Agency. Photo Credit: (NASA/Bill Ingalls)

Renita Fincke follows the arrival of her husband, NASA astronaut Michael Fincke, to the Gagarin Cosmonaut Training Center while holding their 4 month-old baby Tarali Fincke, Sunday, October 24, 2004, in Star City, Russia. 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)

Expedition 11 Commander Sergei Krikalev, left, Flight Engineer John Phillips bid farewell as they depart the Gagarin Cosmonaut Training Center training base, Saturday, April 9, 2005, in Star City, Russia to travel to the Baikonur Cosmodrome in Kazakhstan for final pre-launch preparations. Krikalev, Phillips along with European Space Agency Astronaut Roberto Vittori will launch April 15 on a Soyuz TMA-6 spacecraft to the International Space Station. Krikalev and Phillips will spend six months in space and greet the first Shuttle crew to fly in more than two years when it arrives at the Station, while Vittori spends eight days on the Station under a commercial contract between ESA and the Russian Federal Space Agency. Photo Credit: (NASA/Bill Ingalls)

Expedition 10 Commander Leroy Chiao, far left, Flight Engineer Salizhan Sharipov and European Space Agency astronaut Roberto Vittori, third from left, are welcomed home by officials at Star City, Russia, Monday, April 25, 2005. The crew brought their Soyuz TMA-5 capsule to a pre-dawn landing April 25 northeast of the town of Arkalyk to wrap up a six-month mission aboard the International Space Station for Chiao and Sharipov, and a ten-day mission for Vittori, who flew under a commercial contract between ESA and the Russian Federal Space Agency. Photo Credit: (NASA/Bill Ingalls)

Expedition 9 Commander Gennady Padalka, center, and Expedition 9 Flight Engineer Michael Fincke, background, exit the Gargarin Cosmonaut Training Center's airplane to an awaiting crowd of officials and family members after their flight from Kustanay, Kazakhstan, Sunday, October 24, 2004. Photo Credit: (NASA/Bill Ingalls)

Expedition 6 Commander Ken Bowersox, left and NASA International Space Station Science Officer Don Pettit speak during a press conference at the Gagarin Cosmonaut Training Center in Star City, Russia, Thursday, May 6, 2003. Photo Credit: (NASA/Bill Ingalls)

Expedition 11 Commander Sergei Krikalev, center, Flight Engineer John Phillips, left, and European Space Agency Astronaut Roberto Vittori, of Italy, answer questions from the media prior to their departure from the Gagarin Cosmonaut Training Center training base, Saturday, April 9, 2005, in Star City, Russia. The trio traveled to the Baikonur Cosmodrome in Kazakhstan for final pre-launch preparations. Krikalev, Phillips and Vittori will launch April 15 on a Soyuz TMA-6 spacecraft to the International Space Station. Krikalev and Phillips will spend six months in space and greet the first Shuttle crew to fly in more than two years when it arrives at the Station, while Vittori spends eight days on the Station under a commercial contract between ESA and the Russian Federal Space Agency. Photo Credit: (NASA/Bill Ingalls)

Expedition 11 Commander Sergei Krikalev, center, Flight Engineer John Phillips, left, and European Space Agency Astronaut Roberto Vittori, of Italy, answer questions from the media prior to their departure from the Gagarin Cosmonaut Training Center training base, Saturday, April 9, 2005, in Star City, Russia. The trio traveled to the Baikonur Cosmodrome in Kazakhstan for final pre-launch preparations. Krikalev, Phillips and Vittori will launch April 15 on a Soyuz TMA-6 spacecraft to the International Space Station. Krikalev and Phillips will spend six months in space and greet the first Shuttle crew to fly in more than two years when it arrives at the Station, while Vittori spends eight days on the Station under a commercial contract between ESA and the Russian Federal Space Agency. 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)

May 6, 2003. Star City, Russia. Expedition Six Flight Engineer Nikolai Budarin speaks during a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. Photo Credit: "NASA/Bill Ingalls"

May 6, 2003. Star City, Russia. Expedition Six Flight Engineer Nikolai Budarin (L), Commander Ken Bowersox (C), and NASA ISS Science Officer Don Pettit (R) pose for photos at a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. Photo Credit: "NASA/Bill Ingalls"

Expedition 11 Commander Sergei Krikalev, center, accompanied by Flight Engineer John Phillips, left, and European Space Agency Astronaut Roberto Vittori of Italy are seen at the Gagarin Cosmonaut Training Center training base, Saturday, April 9, 2005, in Star City, Russia, prior to their departure to the Baikonur Cosmodrome in Kazakhstan for final pre-launch preparations. Krikalev, Phillips and Vittori will launch April 15 on a Soyuz TMA-6 spacecraft to the International Space Station. Krikalev and Phillips will spend six months in space and greet the first Shuttle crew to fly in more than two years when it arrives at the Station, while Vittori spends eight days on the Station under a commercial contract between ESA and the Russian Federal Space Agency. Photo Credit: (NASA/Bill Ingalls)

Expedition 6 Flight Engineer Nikolai Budarin, left, Commander Ken Bowersox and International Space Station Science Officer Don Pettit, right, pose for photos at a press conference at the Gagarin Cosmonaut Training Center in Star City, Russia, Thursday, May 6, 2003. Photo Credit: (NASA/Bill Ingalls)

Flight Engineer Salizhan Sharipov, bottom left, Expedition 10 Commander Leroy Chiao and European Space Agency astronaut Roberto Vittori, top left, arrive in Star City, Russia, Monday, April 25, 2005, after thet brought their Soyuz TMA-5 capsule to a pre-dawn landing northeast of Arkalyk, Kazakhstan. Photo Credit: (NASA/Bill Ingalls)

Expedition 30 Flight Engineers Anatoly Ivanishin, far left, and Anton Shkaplerov are welcomed home by colleagues and family in Star City, Russia on Saturday, April 28, 2012. Russian Cosmonauts Ivanishin, Shkaplerov and Expedition 30 Commander Daniel Burbank landed outside of Arkalyk, Kazakhstan earlier in the day from over five months onboard the International Space Station where they served as members of the Expedtion 29 and 30 crews. Photo Credit: (NASA/Carla Cioffi)

STAR CITY, RUSSIA - Russian Space Agency Director Yuri Koptev shakes hands with Expedition Six Commander Ken Bowersox, as Bowersox is also hugged by his wife Annie. The Expedition Six crew spent 161 days in space, 159 manning the International Space Station. Photo Credit: NASA/Bill Ingalls

European Space Agency astronaut Roberto Vittori, right, Expedition 10 Commander Leroy Chiao and Expedition 10 Flight Engineer Salizhan Sharipov, second from left, are welcomed home by well wishers at Star City, Russia, Monday, April 25, 2005. The crew brought their Soyuz TMA-5 capsule to a pre-dawn landing April 25 northeast of the town of Arkalyk in Kazakhstan to wrap up a six-month mission aboard the International Space Station for Chiao and Sharipov, and a ten-day mission for Vittori, who flew under a commercial contract between ESA and the Russian Federal Space Agency. Photo Credit: (NASA/Bill Ingalls)

May 6, 2003. Star City, Russia. Expedition Six Flight Engineer Nikolai Budarin (L), Commander Ken Bowersox (C), and NASA ISS Science Officer Don Pettit (R) answer questions during a Press Conference at the Gagarin Cosmonaut Training Center in Star City, Russia. Photo Credit: "NASA/Bill Ingalls"

STS-91 Mission Specialist Wendy B. Lawrence is ready to go as her flight suit gets a final checkout in the Operations and Checkout (O&C) Building. The fitting takes place prior to the crew walkout and transport to Launch Pad 39A. She is a commander in the Navy and is on her third Shuttle mission and second trip to Mir. Lawrence has served as Director of Operations for NASA at the Gagarin Cosmonaut Training Center in Star City, Russia, and has also trained for a Shuttle-Mir flight. Lawrence will also on the flight deck during ascent and re-entry as flight engineer. In this capacity, she will be on-hand to support the commander and copilot in these critical parts of the flight. She will also have primary responsibility for all Shuttle-Mir transfer operations and science experiments in the middeck crew cabin area. STS-91 is scheduled to be launched on June 2 with a launch window opening around 6:10 p.m. EDT. The mission will feature the ninth and final Shuttle docking with the Russian space station Mir, the first Mir docking for Discovery, the first on-orbit test of the Alpha Magnetic Spectrometer (AMS), and the first flight of the new Space Shuttle super lightweight external tank. Astronaut Andrew S. W. Thomas will return to Earth as a STS91 crew member after living more than four months aboard Mir

Expedition 30 Flight Engineer Anatoly Ivanishin is welcomed home by colleagues and family in Star City, Russia on Saturday, April 28, 2012. Russian Cosmonaut Ivanishin, Expedition 30 Commander Daniel Burbank, and Russian Cosmonaut Anton Shkaplerov landed outside of Arkalyk, Kazakhstan earlier in the day from over five months onboard the International Space Station where they served as members of the Expedtion 29 and 30 crews. Photo Credit: (NASA/Carla Cioffi)

Expedition 6 Flight Engineer Nikolai Budarin, left, Commander Ken Bowersox and International Space Station Science Officer Don Pettit, right, pose for photos at a press conference at the Gagarin Cosmonaut Training Center in Star City, Russia, Thursday, May 6, 2003. Photo Credit: (NASA/Bill Ingalls)

Expedition 6 International Space Station Science Officer Don Pettit speaks during a press conference at the Gagarin Cosmonaut Training Center in Star City, Russia, Thursday, May 6, 2003. Photo Credit: (NASA/Bill Ingalls)

Members of the 11th expedition to the International Space Station, astronaut John Phillips, top left, and cosmonaut Sergei Krikalev, front, arrive at Star City, Russia, Tuesday, Oct. 11, 2005. The crew landed near Arlalyk, Kazakhstan after a six-month mission in orbit. Along with American businessman Greg Olsen, who visited the station for more than a week, Phillips and Krikalev returned to Earth aboard a Russian Soyuz spacecraft. Photo Credit: (NASA/Bill Ingalls)

Expedition 6 Flight Engineer Nikolai Budarin, left, Commander Ken Bowersox and NASA International Space Station Science Officer Don Pettit, right, answer questions during a press conference at the Gagarin Cosmonaut Training Center in Star City, Russia, Thursday, May 6, 2003. Photo Credit: (NASA/Bill Ingalls)

Expedition 10 Flight Engineer Salizhan Sharipov, on bus, looks out at well wishers after arriving back at Star City, Russia from Kazakhstan, Monday, April 25, 2005. Expedition 10 Commander Leroy Chiao, Flight Engineer Salizhan Sharipov and European Space Agency astronaut Roberto Vittori brought their Soyuz TMA-5 capsule to a pre-dawn landing April 25 northeast of the town of Arkalyk to wrap up a six-month mission aboard the International Space Station for Chiao and Sharipov, and a ten-day mission for Vittori, who flew under a commercial contract between ESA and the Russian Federal Space Agency. Photo Credit: (NASA/Bill Ingalls)

Renita Fincke, right, awaits the arrival of her husband NASA astronaut Michael Fincke, while holding their 4 month-old baby Tarali, Sunday, October 24, 2004, in Star City, Russia. Astronaut Terry Virts, Center helps by holding 2 year-old Chandra Fincke. 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)

STAR CITY, RUSSIA - NASA Administrator Sean O'Keefe (left) visits with Expedition Six Commander Ken Bowersox (right) and his brother (center). The Expedition Six crew spent 161 days in space, 159 manning the International Space Station. Photo Credit: NASA/Bill Ingalls

Expedition 9 Flight Engineer Michael Fincke, lower left, greets his wife and children for the first time in six months after exiting the Gargarin Cosmonaut Training Center's airplane in Star City, Russia, Sunday October 24, 2004. Photo Credit: (NASA/Bill Ingalls)