Additional Russian Search and Rescue crews arrive near the Soyuz TMA-03M capsule after it landed with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

A Russian Search and Rescue helicopter pilot waits for the arrival of Expedition 31 Flight Engineer Don Pettit and other personnel so they can be flown from the Soyuz landing site outside the town of Zhezkazgan to the Karaganda Airport on Sunday, July 1, 2012 in Kazakhstan. Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency landed in their Soyuz TMA-03M capsule in a remote area near the town of Zhezkazgan, Kazakhstan. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 Flight Engineer Don Pettit of NASA is helped out of the Soyuz TMA-03M capsule after he and Expedition 31 Commander Oleg Kononenko of Russia, and Flight Engineer Andre Kuipers of the European Space Agency landed in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 Flight Engineer Andre Kuipers of the European Space Agency waves while seated in a chair outside the Soyuz TMA-03M capsule shortly after he and Expedition 31 Commander Oleg Kononenko of Russia, and Flight Engineer Don Pettit of NASA landed in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

The Expedition 31 Soyuz landing site is seen through the plexiglass window of the helicopter carrying Expedition 31 Flight Engineer Don Pettit to Karaganda less than two hours after he and Commander Oleg Kononenko of Russia, and Flight Engineer Andre Kuipers of the European Space Agency landed in their Soyuz TMA-03M capsule in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Support and medical personnel assist Expedition 31 Flight Engineer Don Pettit of NASA out of the Soyuz TMA-03M capsule shortly after he and Expedition 31 Commander Oleg Kononenko of Russia, and Flight Engineers Andre Kuipers of the European Space Agency landed in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 Flight Engineer Don Pettit of NASA is helped out of a Russian Search and Rescue helicopter after it carried him from the Soyuz TMA-03M capsule landing site in a remote area near the town of Zhezkazgan to Karaganda on Sunday, July 1, 2012 in Kazakhstan. Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Pettit and Andre Kuipers of the European Space Agency landed in their Soyuz TMA-03M capsule in a remote area near the town of Zhezkazgan, Kazakhstan after serving more than six months onboard the International Space Station as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-03M spacecraft is seen as it lands with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-03M spacecraft is seen as it lands with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel rush to the the Soyuz TMA-03M capsule shortly after it landed with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-03M spacecraft is seen as it lands with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 Commander Oleg Kononenko of Russia is monitored by medical support personal after he and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency landed in their Soyuz TMA-03M capsule in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

A Russian Search and Rescue helicopter flies to the the Soyuz TMA-03M capsule shortly after it landed with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel rush to the the Soyuz TMA-03M capsule shortly after it landed with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-03M spacecraft is seen as it lands with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Russian support personnel prepare to access the crew of Soyuz TMA-03M capsule shortly after it landed with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-03M spacecraft is seen as it lands with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Support personnel rush to the the Soyuz TMA-03M capsule shortly after it landed with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 Flight Engineer Andre Kuipers of the European Space Agency is helped out of the Soyuz TMA-03M capsule after he and Expedition 31 Commander Oleg Kononenko of Russia, and Flight Engineer Don Pettit of NASA landed in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Russian support personnel are handed sokol suit gloves from the crew inside the Soyuz TMA-03M capsule after it landed with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

A closely cropped image of the Soyuz capsule shows the charring that took place during reentry of the Soyuz TMA-03M capsule after it landed with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Russian Search and Rescue crews attach ladders and a slide for access to the Soyuz TMA-03M capsule shortly after it landed with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-03M capsule is seen out the right window of a Russian Search and Rescue helicopter as it lands near capsule with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency onboard in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 Flight Engineer Andre Kuipers of the European Space Agency is carried by support personal from the Soyuz TMA-03M capsule to a chair shortly after he and Expedition 31 Commander Oleg Kononenko of Russia, and Flight Engineer Don Pettit of NASA landed in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 Flight Engineer Sergei Revin performs the tradition of signing one of the doors at the Cosmonaut Hotel on Tuesday, May 15, 2012 in Baikonur, Kazakhstan. The Soyuz spacecraft with Revin, Expedition 31 Soyuz Commander Gennady Padalka, and NASA Flight Engineer Joe Acaba aboard launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Expedition 31 Flight Engineer Joe Acaba performs the tradition of signing one of the doors at the Cosmonaut Hotel on Tuesday, May 15, 2012 in Baikonur, Kazakhstan. The Soyuz spacecraft with Acaba, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin of Russia aboard launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Expedition 31 Flight Engineer Joe Acaba waves farewell to friends and family as his bus departs the Cosmonaut Hotel with fellow Expedition 31 crew members, Commander Gennady Padalka and Sergei Revin on Tuesday, May 15, 2012 in Baikonur, Kazakhstan. The Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka, Flight Engineer Sergei Revin, and Acaba onboard launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

A Soyuz TMA spacecraft mockup is seen at the Gagarin Cosmonaut Training Center, Monday, April 23, 2012 in Star City, Russia. Expedition 31 prime and backup crew members train in the Soyuz mockup in preparation for final flight to the International Space Station. Photo Credit: (NASA/Carla Cioffi)

International Space Station mockup training modules are seen at the Gagarin Cosmonaut Training Center, Monday, April 23, 2012 in Star City, Russia. Expedition 31 prime and backup crew members train in these moduls in preparation for final flight to the International Space Station. Photo Credit: (NASA/Carla Cioffi)

The Soyuz TMA-03M spacecraft is seen as it lands with Expedition 31 Commander Oleg Kononenko of Russia and Flight Engineers Don Pettit of NASA and Andre Kuipers of the European Space Agency in a remote area near the town of Zhezkazgan, Kazakhstan, on Sunday, July 1, 2012. Pettit, Kononenko and Kuipers returned from more than six months onboard the International Space Station where they served as members of the Expedition 30 and 31 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 backup crew members Kevin Ford, Oleg Novitskiy and Evgeny Tarelkin stand at attention before senior officials for their final qualification test in preparation for flight, Monday, April 23, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Expedition 31 prime crew members commander Gennady Padalka, flight engineers Joe Acaba and Sergei Revin practiced similar scenarios nearby in advance of their final approval for launch to the International Space Station, scheduled for May 15, 2012. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 backup crew members Kevin Ford (left), Oleg Novitskiy and Evgeny Tarelkin (right) are interviewed by the press before their final qualification test in preparation for flight, Monday, April 23, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Expedition 31 prime crew members commander Gennady Padalka, flight engineers Joe Acaba and Sergei Revin practiced similar scenarios nearby in advance of their final approval for launch to the International Space Station, scheduled for May 15, 2012. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 backup crew members Kevin Ford (left), Oleg Novitskiy and Evgeny Tarelkin (right) are interviewed by the press before their final qualification test in preparation for flight, Monday, April 23, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Expedition 31 prime crew members commander Gennady Padalka, flight engineers Joe Acaba and Sergei Revin practiced similar scenarios nearby in advance of their final approval for launch to the International Space Station, scheduled for May 15, 2012. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA Flight Engineer Joe Acaba, far left, Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin, third from left, select International Space Station Russian segment event simulation test cards for their final qualification test in preparation for launch, Monday, April 23, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Padalka, Acaba and Revin are set to launch May 15 from the Baikonur Cosmodrome in their Soyuz TMA-04M spacecraft to the International Space Station. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 backup crew members Kevin Ford, Oleg Novitskiy and Evgeny Tarelkin salute senior officials before their final qualification test in preparation for flight, Monday, April 23, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Expedition 31 prime crew members commander Gennady Padalka, flight engineers Joe Acaba and Sergei Revin practiced similar scenarios nearby in advance of their final approval for launch to the International Space Station, scheduled for May 15, 2012. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA backup crew member Kevin Ford signs for his Soyuz vehicle simulation test card before senior officials at the Gagarin Cosmonaut Training Center, Monday, April 23, 2012 in Star City, Russia, while his fellow crew members Oleg Novitskiy (far left) and Evgeny Tarelkin look on. Expedition 31 prime crew members commander Gennady Padalka, flight engineers Joe Acaba and Sergei Revin practiced similar scenarios nearby in advance of their final approval for launch to the International Space Station, scheduled for May 15, 2012. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 backup crew members Kevin Ford (left), Oleg Novitskiy and Evgeny Tarelkin (right) give the thumbs up before their final qualification test in preparation for flight, Monday, April 23, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Expedition 31 prime crew members commander Gennady Padalka, flight engineers Joe Acaba and Sergei Revin practiced similar scenarios nearby in advance of their final approval for launch to the International Space Station, scheduled for May 15, 2012. Photo Credit: (NASA/Carla Cioffi)

An Expedition 31 crew member's hand is seen at the controls inside the Soyuz TMA mockup Tuesday, April 24, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. The crew perform final qualification tests in preparation for their launch to the International Space Station May 15 from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

The family of Expedition 31 Flight Engineer Joe Acaba sings happy birthday to him from the Russian Mission Control Center in Korolev, Russia, Thursday, May 17, 2012. Acaba, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin, docked their Soyuz TMA-04M spacecraft to the space station at 8:36 a.m. Moscow time, two days after they launched from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 crew members Joe Acaba, left, Commander Gennady Padalka and Sergei Revin, right, receive the traditional blessing by an Orthodox priest at the Cosmonaut Hotel on Tuesday, May 15, 2012 in Baikonur, Kazakhstan. The Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka, Flight Engineer Sergei Revin, and NASA Flight Engineer Joe Acaba aboard launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Expedition 31 Flight Engineer Sergei Revin of Russia adjust his watch shirtly after donning his Russian Sokol suit in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Revin, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Joe Acaba onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 31 Flight Engineer Joe Acaba waits to have his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Acaba, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 31 Flight Engineer Sergei Revin of Russia dons his Russian Sokol suit in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Revin, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Joe Acaba onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 31 Soyuz Commander Gennady Padalka smiles after having his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Padalka, Flight Engineer Sergei Revin, and Expedition 31 Flight Engineer Joe Acaba onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 31 Flight Engineer Sergei Revin of Russia dons his Russian Sokol suit in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Revin, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Joe Acaba onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 31 Flight Engineer Joe Acaba dons his Russian Sokol suit in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Acaba, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 31 Flight Engineer Joe Acaba dons his Russian Sokol suit in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Acaba, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Expedition 31 Flight Engineer Joe Acaba waves to family and friends as he waits to have his Russian Sokol suit pressure checked prior to his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Acaba, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

The Soyuz TMA-04M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Tuesday, May 15, 2012 carrying Expedition 31 Soyuz Commander Gennady Padalka, NASA Flight Engineer Joseph Acaba and Flight Engineer Sergei Revin to the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 backup crew member Oleg Novitskiy, foreground, and Kevin Ford head towards a Soyuz spacecraft mockup to conduct final simulation tests in preparation for flight, Monday, April 23, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Photo Credit: (NASA/Carla Cioffi)

The Soyuz TMA-04M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Tuesday, May 15, 2012 carrying Expedition 31 Soyuz Commander Gennady Padalka, NASA Flight Engineer Joseph Acaba and Flight Engineer Sergei Revin to the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Quarantined Expedition 31 Flight Engineer Joe Acaba answers reporters questions from behind glass during a prelaunch press conference held at the Cosmonaut Hotel on Monday, May 14, 2012 in Baikonur, Kazakhstan. The launch of the Soyuz spacecraft with Acaba, Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Quarantined Expedition 31 Soyuz Commander Gennady Padalka answers reporters questions from behind glass during a prelaunch press conference held at the Cosmonaut Hotel on Monday, May 14, 2012 in Baikonur, Kazakhstan. The launch of the Soyuz spacecraft with Padalka, Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Expedition 31 Soyuz Commander Gennady Padalka continues the traditional of signing one of the doors at the Cosmonaut Hotel on Tuesday, May 15, 2012 in Baikonur, Kazakhstan. The Soyuz spacecraft with Padalka, Flight Engineer Sergei Revin of Russia, and NASA Flight Engineer Joe Acaba aboard launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Quarantined Expedition 31 Flight Engineer Joe Acaba answers reporters questions from behind glass during a prelaunch press conference held at the Cosmonaut Hotel on Monday, May 14, 2012 in Baikonur, Kazakhstan. The launch of the Soyuz spacecraft with Acaba, Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Quarantined Expedition 31 Flight Engineer Sergei Revin of Russia answers reporters questions from behind glass during a prelaunch press conference held at the Cosmonaut Hotel on Monday, May 14, 2012 in Baikonur, Kazakhstan. The launch of the Soyuz spacecraft with Revin, Soyuz Commander Gennady Padalka, and NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Members of the media photograph the Soyuz TMA-04M rocket launch from the Baikonur Cosmodrome in Kazakhstan on Tuesday, May 15, 2012. Heading to the International Space Station onboard the soyuz are Expedition 31 Soyuz Commander Gennady Padalka, NASA Flight Engineer Joseph Acaba and Flight Engineer Sergei Revin. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-04M rocket boosters are seen being jettisoned during the launch from the Baikonur Cosmodrome in Kazakhstan on Tuesday, May 15, 2012. Expedition 31 Soyuz Commander Gennady Padalka, NASA Flight Engineer Joseph Acaba and Flight Engineer Sergei Revin were launched to the International Space Station at 9:01am Kazakhstan time. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 NASA flight engineer Joe Acaba, right, and Soyuz Commander Gennady Padalka enter a mockup Soyuz TMA spacecraft in order to perform final qualification tests in preparation for flight, Tuesday, April 24, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Acaba, Padalka and flight engineer Sergei Revin are set to launch to the International Space Station May 15 from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA flight engineer Joe Acaba, left, Soyuz Commander Gennady Padalka and flight engineer Sergei Revin, third from left, stand at attention before senior officials for their final qualification test in preparation for flight, Tuesday, April 24, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Acaba, Padalka and Revin are set to launch to the International Space Station May 15 from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA flight engineer Joe Acaba, entering capsule, and Soyuz Commander Gennady Padalka enter a mockup Soyuz TMA spacecraft in order to perform final qualification tests in preparation for flight, Tuesday, April 24, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Acaba, Padalka and flight engineer Sergei Revin are set to launch to the International Space Station May 15 from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA backup crew member Kevin Ford, left, Oleg Novitskiy and Evgeny Tarelkin, third from left, select International Space Station Russian segment event simulation test cards for their final qualification test in preparation for flight, Tuesday, April 24, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA backup crew member Kevin Ford signs for his International Space Station Russian segment event simulation test card before senior officials at the Gagarin Cosmonaut Training Center, Tuesday, April 24, 2012 in Star City, Russia, while his fellow crew members Oleg Novitskiy (left) and Evgeny Tarelkin look on. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA backup crew member Kevin Ford, bottom, Evgeny Tarelkin and Oleg Novitskiy, top, pose for photos before they start their International Space Station Russian segment event simulation for their final qualification test in preparation for flight, Tuesday, April 24, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA flight engineer Joe Acaba, right, flight engineer Sergei Revin and Soyuz Commander Gennady Padalka enter a mockup Soyuz TMA spacecraft in order to perform final qualification tests in preparation for flight, Tuesday, April 24, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Acaba, Revin and Padalka are set to launch to the International Space Station May 15 from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA flight engineer Joe Acaba, Soyuz Commander Gennady Padalka and flight engineer Sergei Revin pose for photos before their final qualification test in preparation for flight, Tuesday, April 24, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Acaba, Padalka and Revin are set to launch to the International Space Station May 15 from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 Soyuz Commander Gennady Padalka signs for his Soyuz vehicle simulation test card before senior officials at the Gagarin Cosmonaut Training Center, Tuesday, April 24, 2012 in Star City, Russia, while his fellow crew members NASA flight engineer Joe Acaba, left, and flight engineer Sergei Revin look on. Padalka, Acaba and Revin are set to launch to the International Space Station May 15 from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA flight engineer Joe Acaba signs for his Soyuz vehicle simulation test card before senior officials at the Gagarin Cosmonaut Training Center, Tuesday, April 24, 2012 in Star City, Russia, while his fellow crew members Soyuz Commander Gennady Padalka, left, and flight engineer Sergei Revin look on. Acaba, Padalka and Revin are set to launch to the International Space Station May 15 from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 NASA flight engineer Joe Acaba, left, Soyuz Commander Gennady Padalka and flight engineer Sergei Revin, third from left, stand at attention before senior officials for their final qualification test in preparation for flight, Tuesday, April 24, 2012 at the Gagarin Cosmonaut Training Center in Star City, Russia. Acaba, Padalka and Revin are set to launch to the International Space Station May 15 from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 31 crew members Joe Acaba, left, Commander Gennady Padalka and Sergei Revin, right, receive the traditional blessing by an Orthodox priest at the Cosmonaut Hotel on Tuesday, May 15, 2012 in Baikonur, Kazakhstan. The Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka, Flight Engineer Sergei Revin, and NASA Flight Engineer Joe Acaba aboard launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Expedition 31 crew members Joe Acaba, left, Commander Gennady Padalka and Sergei Revin, right, wave farewell as they depart the Cosmonaut Hotel on Tuesday, May 15, 2012 in Baikonur, Kazakhstan. The Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka, Flight Engineer Sergei Revin, and NASA Flight Engineer Joe Acaba aboard launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit (NASA/Victor Zelenstov)

The Soyuz TMA-04M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Tuesday, May 15, 2012 carrying Expedition 31 Soyuz Commander Gennady Padalka, NASA Flight Engineer Joseph Acaba and Flight Engineer Sergei Revin to the International Space Station. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-04M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Tuesday, May 15, 2012 carrying Expedition 31 Soyuz Commander Gennady Padalka, NASA Flight Engineer Joseph Acaba and Flight Engineer Sergei Revin to the International Space Station. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-04M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Tuesday, May 15, 2012 carrying Expedition 31 Soyuz Commander Gennady Padalka, NASA Flight Engineer Joseph Acaba and Flight Engineer Sergei Revin to the International Space Station. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-04M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Tuesday, May 15, 2012 carrying Expedition 31 Soyuz Commander Gennady Padalka, NASA Flight Engineer Joseph Acaba and Flight Engineer Sergei Revin to the International Space Station. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-04M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Tuesday, May 15, 2012 carrying Expedition 31 Soyuz Commander Gennady Padalka, NASA Flight Engineer Joseph Acaba and Flight Engineer Sergei Revin to the International Space Station. Photo Credit: (NASA/Bill Ingalls)

Expedition 31 NASA NASA Flight Engineer Joe Acaba signs for his International Space Station Russian segment event simulation test card before senior officials at the Gagarin Cosmonaut Training Center, Monday, April 23, 2012 in Star City, Russia, while his fellow crew members Soyuz commander Gennady Padalka (left) and Sergei Revin look on. Acaba, Padalka and Revin are set to launch May 15 from the Baikonur Cosmodrome in their Soyuz TMA-04M spacecraft to the International Space Station. Photo Credit: (NASA/Carla Cioffi)

NASA Director of Human Space Flight Program in Russia Joel Montalbano talks on the phone to the crew of Expedition 31, who are onboard the International Space Station, from the Russian Mission Control Center, Thursday, May 17, 2012 in Korolev, Russia. Expedition 31 Soyuz Commander Gennady Padalka, Flight Engineer Sergei Revin, and NASA Flight Engineer Joe Acaba docked their soyuz TMA-04M spacecraft to the space station at 8:36 a.m. Moscow time two days after they launched from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Bill Ingalls)

Quarantined Expedition 31 prime crew members, from left, NASA Flight Engineer Joe Acaba, Russian Soyuz Commander Gennady Padalka, Russian Flight Engineer Sergei Revin, along with Expedition 31 backup few members, Kevin Ford, Oleg Novitskiy and Evgeny Tarelkin pose for a group photo during a prelaunch press conference held at the Cosmonaut Hotel on Monday, May 14, 2012 in Baikonur, Kazakhstan. The launch of the Soyuz spacecraft with Padalka, Revin, and Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

The family of Expedition 31 Flight Engineer Joe Acaba applauds as they watch the docking of the Soyuz TMA-04M spacecraft on the TV screen at the Russian Mission Control Center in Korolev, Russia, Thursday, May 17, 2012. The Soyuz docked to the International Space Station with Acaba and fellow crew members, Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin two days after they launched from the Baikonur Cosmodrome in Kazakhstan. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-04M spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome in Kazakhstan, Sunday, May 13, 2012. The launch of the Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

The Soyuz TMA-04M spacecraft is seen moments before being raised at launch pad one of the Baikonur Cosmodrome in Kazakhstan, Sunday, May 13, 2012. The launch of the Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

The Soyuz TMA-04M spacecraft is rolled out by train on its way to the launch pad at the Baikonur Cosmodrome in Kazakhstan, Sunday, May 13, 2012. The launch of the Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Flight Engineer Sergei Revin has his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Revin, Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Joe Acaba onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Flight Engineer Joe Acaba has his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Acaba, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Flight Engineer Sergei Revin sits down to have his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Revin, Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Joe Acaba onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Quarantined Expedition 31 prime crew members, from left, NASA Flight Engineer Joe Acaba, Russian Soyuz Commander Gennady Padalka, and Russian Flight Engineer Sergei Revin answer reporters questions from behind glass during a prelaunch press conference held at the Cosmonaut Hotel on Monday, May 14, 2012 in Baikonur, Kazakhstan. The launch of the Soyuz spacecraft with the crew of three is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

The Soyuz TMA-04M spacecraft is rolled out by train o the launch pad at the Baikonur Cosmodrome in Kazakhstan, Sunday, May 13, 2012. The launch of the Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Flight Engineer Joe Acaba has his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Acaba, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Quarantined Expedition 31 prime crew members, from left, NASA Flight Engineer Joe Acaba, Russian Soyuz Commander Gennady Padalka, and Russian Flight Engineer Sergei Revin pose for a group photograph during a prelaunch press conference held at the Cosmonaut Hotel on Monday, May 14, 2012 in Baikonur, Kazakhstan. The launch of the Soyuz spacecraft with the crew of three is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Flight Engineer Sergei Revin sits down to have his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Revin, Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Joe Acaba onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

The Soyuz rocket is seen in the monitor of a video camera moments before Expedition 31 Soyuz Commander Gennady Pedalka, NASA Flight Engineer Joseph Acaba and Flight Engineer Sergei Revin arrive to board the rocket at the Baikonur Cosmodrome in Kazakhstan, Tuesday, May 15, 2012. The launch of the Soyuz spacecraft with Padalka, Revin, and Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

The Soyuz TMA-04M spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome in Kazakhstan, Sunday, May 13, 2012. The launch of the Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

The Soyuz TMA-04M spacecraft is rolled out by train on its way to the launch pad at the Baikonur Cosmodrome in Kazakhstan, Sunday, May 13, 2012. The launch of the Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

The Soyuz TMA-04M spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome in Kazakhstan, Sunday, May 13, 2012. The launch of the Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Expedition 31 Soyuz Commander Gennady Padalka has his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Padalka, Flight Engineer Sergei Revin and Flight Engineer Joe Acaba onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

Russian security team members stop to take a photo as the Soyuz TMA-04M spacecraft is rolled out by train to launch pad one at the Baikonur Cosmodrome in Kazakhstan, Sunday, May 13, 2012. The launch of the Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

The Soyuz TMA-04M spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome in Kazakhstan, Sunday, May 13, 2012. The launch of the Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)

Flight Engineer Joe Acaba has his Russian Sokol suit pressure checked in preparation for his launch onboard the Soyuz TMA-04M on Tuesday, May 15, 2012 at the Baikonur Cosmodrome in Kazakhstan. The Soyuz spacecraft with Acaba, Expedition 31 Soyuz Commander Gennady Padalka, and Flight Engineer Sergei Revin onboard, launched at 9:01 a.m. Kazakhstan time on Tuesday, May 15. Photo Credit: (NASA/GCTC/Andrey Shelepin)

The Soyuz TMA-04M spacecraft is rolled out by train on its way to the launch pad at the Baikonur Cosmodrome in Kazakhstan, Sunday, May 13, 2012. The launch of the Soyuz spacecraft with Expedition 31 Soyuz Commander Gennady Padalka and Flight Engineer Sergei Revin of Russia, and prime NASA Flight Engineer Joe Acaba is scheduled for 9:01 a.m. local time on Tuesday, May 15. Photo Credit (NASA/Bill Ingalls)