Expedition 24 Flight Engineer Mikhail Kornienko, embraces his family after he and Expedition 24 Commander Alexander Skvortsov arrived at Chkalovskaya airport just outside Moscow on Saturday, Sept. 25, 2010. Skvortsov, Kornienko and Expedition 24 Flight Engineer Tracy Caldwell Dyson, landed in their Soyuz TMA-18 spacecraft near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Commander Alexander Skvortsov, embraces his family after he and Expedition 24 Flight Engineer Mikhail Kornienko arrived at Chkalovskaya airport just outside Moscow on Saturday, Sept. 25, 2010. Skvortsov, Kornienko and Expedition 24 Flight Engineer Tracy Caldwell Dyson, landed in their Soyuz TMA-18 spacecraft near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Mikhail Kornienko, foreground, and Expedition 24 Commander Alexander Skvortsov embrace their family and friends after their arrival at Chkalovskaya airport just outside Moscow on Saturday, Sept. 25, 2010. Skvortsov, Kornienko and Expedition 24 Flight Engineer Tracy Caldwell Dyson, landed in their Soyuz TMA-18 spacecraft near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Mikhail Kornienko, left, and Commander Alexander Skvortsov, shake hands with Russian dignitaries after their arrival at Chkalovskaya airport just outside Moscow on Saturday, Sept. 25, 2010. Skvortsov, Kornienko and Expedition 24 Flight Engineer Tracy Caldwell Dyson, landed in their Soyuz TMA-18 spacecraft near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Mikhail Kornienko answer reporters questions in traditional Kazakh dress during a post flight ceremony and press conference at the Karaganda airport in Kazakhstan on Saturday, Sept. 25, 2010. The Soyuz TMA-18 spacecraft, carrying Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Kornienko, landed, near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Commander Alexander Skvortsov answer reporters questions in traditional Kazakh dress during a post flight ceremony and press conference at the Karaganda airport in Kazakhstan on Saturday, Sept. 25, 2010. The Soyuz TMA-18 spacecraft, carrying Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko, landed, near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Mikhail Kornienko is helped out of the Soyuz TMA-18 spacecraft shortly after landing with fellow crew members Commander Alexander Skvortsov and Tracy Caldwell Dyson near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Mikhail Kornienko is carried to the medical tent shortly after landing in the Soyuz TMA-18 spacecraft with fellow crew members Commander Alexander Skvortsov and Tracy Caldwell Dyson near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Russian search and rescue helicopters refuel in Arkalyk, Kazakhstan prior to the landing of the Soyuz TMA-18 spacecraft with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Tracy Caldwell Dyson exits the helicopter after her flight from the Soyuz TMA-18 spacecraft landing site near Arkalyk, Kazakhstan to Karaganda, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson returned from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Tracy Caldwell Dyson talks to her husband on a satellite phone shortly after landing in the Soyuz TMA-18 spacecraft with fellow crew members Commander Alexander Skvortsov and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Commander Alexander Skvortsov is carried to the medical tent shortly after landing in the Soyuz TMA-18 spacecraft with fellow crew members Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Tracy Caldwell Dyson is helped out of the Soyuz TMA-18 spacecraft shortly after landing with fellow crew members Commander Alexander Skvortsov and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Tracy Caldwell Dyson is helped out of the Soyuz TMA-18 spacecraft shortly after landing with fellow crew members Commander Alexander Skvortsov and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Tracy Caldwell Dyson signs the inside of the Russian helicopter that took her from the Soyuz TMA-18 spacecraft landing site near Arkalyk, Kazakhstan to Karaganda, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson returned from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Commander Alexander Skvortsov celebrates as he is helped out of the Soyuz TMA-18 spacecraft shortly after landing with fellow crew members Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Tracy Caldwell Dyson, left, Expedition 24 Commander Alexander Skvortsov, center, and Expedition 24 Flight Engineer Mikhail Kornienko answer reporters questions in traditional Kazakh dress during a post flight ceremony and press conference at the Karaganda airport in Kazakhstan on Saturday, Sept. 25, 2010. The Soyuz TMA-18 spacecraft, carrying Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko, landed, near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 NASA Flight Engineer Shannon Walker, top, Expedition 24 NASA Flight Engineer Doug Wheelock, center, and Expedition 24 Soyuz Commander Fyodor Yurchikhin wave farewell from the bottom of the Soyuz rocket at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Wednesday, June 16, 2010. Walker, Wheelock and Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Photo Credit: (NASA/Carla Cioffi)

NASA astronaut and Expedition 24 back-up crew member, Cady Coleman, speaks with the crew of Expedition 24 upon their arrival to the International Space Station on Friday, June 18, 2010 at Russian Mission Control Center in Korolev, Russia. Photo Credit: (NASA/Carla Cioffi)

Girls in traditional Kazakhstan dress await the arrival of the Soyuz TMA-18 crew at the Karaganda airport in Kazakhstan. The Soyuz TMA-18 spacecraft, carrying Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko, landed, near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Commander Alexander Skvortsov, front left, and Flight Engineer Mikhail Kornienko, back left, are helped down the stairs of an airplane after their arrival at Chkalovskaya airport just outside Moscow on Saturday, Sept. 25, 2010. Skvortsov, Kornienko and Expedition 24 Flight Engineer Tracy Caldwell Dyson, landed in their Soyuz TMA-18 spacecraft near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Astronauts Tracy Caldwell Dyson, flight engineer on Expeditions 23 and 24, left, and Doug Wheelock, Expedition 24 flight engineer and commander of Expedition 25, discuss their mission to the International Space Station during a visit to NASA Headquarters in Washington, Wednesday, March 16, 2011. (NASA/Paul E. Alers)

Astronauts Tracy Caldwell Dyson, flight engineer on Expeditions 23 and 24, left, and Doug Wheelock, Expedition 24 flight engineer and commander of Expedition 25, discuss their mission to the International Space Station during a visit to NASA Headquarters in Washington, Wednesday, March 16, 2011. (NASA/Paul E. Alers)

Astronauts Tracy Caldwell Dyson, flight engineer on Expeditions 23 and 24, left, and Doug Wheelock, Expedition 24 flight engineer and commander of Expedition 25, discuss their mission to the International Space Station during a visit to NASA Headquarters in Washington, Wednesday, March 16, 2011.

The Soyuz TMA-18 spacecraft is seen as it lands with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-18 spacecraft is seen as it lands with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineers Tracy Caldwell Dyson, left, Commander Alexander Skvortsov, center and Mikhail Kornienko sit in chairs outside the Soyuz Capsule just minutes after they landed near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Soyuz Commander Fyodor Yurchikhin has his Russian Sokol suit pressure checked at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Yurchikhin and fellow Expedition 24 crew members, Flight Engineers Shannon Walker and Doug Wheelock launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)

The Soyuz TMA-18 spacecraft is seen as it lands with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Head of the Russian Federal Space Agency, Anatoly Perminov holds a poster given to him by the crew of Expedition 24 during the State Commission meeting to approve the Soyuz launch of Expedition 24 Flight Engineers Doug Wheelock, Shannon Walker and Soyuz Commander Fyodor Yurchikhin on Monday, June 14, 2010 in Baikonur, Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 Flight Engineer Shannon Walker has her Russian Sokol suit pressure checked at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker and fellow Expedition 24 crew members Flight Engineers Doug Wheelock and Soyuz Commander Fyodor Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 Flight Engineer Shannon Walker has her Russian Sokol suit pressure checked at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker and fellow Expedition 24 crew members Flight Engineers Doug Wheelock and Soyuz Commander Fyodor Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)

The Soyuz TMA-18 spacecraft, with it's crew of three still inside, is seen just moments after landing with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Russian search and rescue personnel and engineers prepare to extract the crew from the Soyuz TMA-18 moments after it landed with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Russian search and rescue teams arrive at the landing site seconds after the Soyuz TMA-18 spacecraft touched down with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Soyuz Commander and Flight Engineer Fyodor Yurchikhin performs the traditional door signing prior to his launch to the International Space Station, Tuesday, June 15, 2010 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Yurchikhin was launched onboard the Soyuz rocket the following morning with Expedition 24 Flight Engineer Shannon Walker and Doug Wheelock on a mission to the ISS. Photo Credit: (NASA/Carla Cioffi)

Russian search and rescue teams arrive at the landing site seconds after the Soyuz TMA-18 spacecraft touched down with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Russian search and rescue personnel and engineers prepare to extract the crew from the Soyuz TMA-18 moments after it landed with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-18 spacecraft is seen as it lands with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-18 spacecraft is seen as it lands with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 Flight Engineer Doug Wheelock has his Russian Sokol suit pressure checked at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock and fellow Expedition 24 crew members Flight Engineer Shannon Walker and Soyuz Commander Fyodor Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 Flight Engineer Doug Wheelock has his Russian Sokol suit pressure checked at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock and fellow Expedition 24 crew members Flight Engineer Shannon Walker and Soyuz Commander Fyodor Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 Flight Engineer Doug Wheelock has his Russian Sokol suit pressure checked at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock and fellow Expedition 24 crew members Flight Engineer Shannon Walker and Soyuz Commander Fyodor Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 Flight Engineer Doug Wheelock performs the traditional door signing prior to his launch to the International Space Station, Tuesday, June 15, 2010 at the Cosmonaut Hotel in Baikonur, Kazakhstan. Wheelock was launched onboard the Soyuz rocket the following morning with Expedition 24 Flight Engineer Shannon Walker and Soyuz Commander Fyodor Yurchikhin on a mission to the ISS. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 Flight Engineer Shannon Walker has her Russian Sokol suit pressure checked at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker and fellow Expedition 24 crew members Flight Engineers Doug Wheelock and Soyuz Commander Fyodor Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 Commander Alexander Skvortsov laughs after being given fresh fruit and vegetables shortly after landing in the Soyuz TMA-18 spacecraft with fellow crew members Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-18 spacecraft is seen as it lands with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 NASA Flight Engineer Doug Wheelock, left, Expedition 24 Soyuz Commander Fyodor Yurchikhin and Expedition 24 Flight Engineer Shannon Walker, third from left, walk out to salute Head of the Russian Federal Space Agency Anatoly Perminov, far right, prior to their launch onboard the Soyuz TMA-19 to the International Space Station (ISS), Wednesday, June 16, 2010 in Baikonur, Kazakhstan. Photo Credit: (NASA/Victor Zelentsov)

Expedition 24 NASA Flight Engineer Shannon Walker, top, Expedition 24 NASA Flight Engineer Doug Wheelock, center, and Expedition 24 Soyuz Commander Fyodor Yurchikhin prepare to board their Soyuz TMA-19 spacecraft at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Wednesday, June 16, 2010. Walker, Wheelock and Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Shannon Walker, top, Expedition 24 NASA Flight Engineer Doug Wheelock, center, and Expedition 24 Soyuz Commander Fyodor Yurchikhin wave farewell from the bottom of the Soyuz rocket at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Wednesday, June 16, 2010. Walker, Wheelock and Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 at 3:35 a.m. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Shannon Walker dons her Russian Sokol Suit with the help of suit technicians at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 Flight Engineer Tracy Caldwell Dyson shakes hands with NASA Astronaut and Chief of the Astronaut Office Peggy Whitson shortly after landing in the Soyuz TMA-18 spacecraft with fellow crew members Commander Alexander Skvortsov and Mikhail Kornienko near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. Russian Cosmonauts Skvortsov and Kornienko and NASA Astronaut Caldwell Dyson, are returning from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

The Soyuz TMA-19 rocket launches from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 carrying Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin of Russia to the International Space Station. Their Soyuz TMA-19 rocket launched at 3:35 a.m Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 Flight Engineer Shannon Walker, left, and back-up crew member Cady Coleman smile during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan, Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 Flight Engineer Doug Wheelock answers a reporter’s question during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 Flight Engineer Shannon Walker answers a reporter’s question during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 Flight Engineer and Soyuz Commander Fyodor Yurchikhin answers a reporter’s question during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 NASA back-up crew member Cady Coleman answers a reporter’s question during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 Flight Engineer Doug Wheelock, left, answers a reporter’s question during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan, while Soyuz Commander Fyodor Yurchikhin looks on, Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 Flight Engineers Doug Wheelock, left, and Shannon Walker say goodbye to friends and family after a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan, Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 European Space Agency back-up crew member Paolo Nespoli listens to a reporter’s question during a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan on Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

William Gerstenmaier, Associate Administrator for Space Operations, speaks during the State Commission meeting to approve the Soyuz launch of Expedition 24 Flight Engineers Doug Wheelock, Shannon Walker and Soyuz Commander Fyodor Yurchikhin on Monday, June 14, 2010 in Baikonur, Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineers Doug Wheelock, left, and Shannon Walker wave farewell to well-wishers as they depart the Cosmonaut Hotel on the evening before their launch on the Soyuz TMA-19 rocket to the International Space Station, Tuesday, June 15, 2010 in Baikonur, Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

William Gerstenmaier, second from right, NASA Associate Administrator for Space Operations, speaks to the crew of Expedition 24 shortly after their arrival to the International Space Station (ISS) aboard their Soyuz TMA-19 on Friday, June 18, 2010 at Russian Mission Control in Korolev, Russia. Photo Credit: (NASA/Carla Cioffi)

The crew of Expedition 24 NASA Flight Engineer Doug Wheelock, left, Russian Soyuz Commander Fyodor Yurchikhin and NASA Flight Engineer Shannon Walker are seen during the State Commission meeting to approve the Soyuz launch of Expedition 24 Flight Engineers Doug Wheelock, Shannon Walker and Soyuz Commander Fyodor Yurchikhin on Monday, June 14, 2010 in Baikonur, Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

Russian and American personnel work at the landing site of the Soyuz TMA-18 spacecraft near the town of Arkalyk, Kazakhstan on Saturday, Sept. 25, 2010. The Soyuz TMA-18 spacecraft landed with Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko onboard. The three returned from six months onboard the International Space Station where they served as members of the Expedition 23 and 24 crews. Photo Credit: (NASA/Bill Ingalls)

Expedition 24 NASA Flight Engineer Doug Wheelock has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Shannon Walker launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 Flight Enginner Shannon Walker waits to have her Russian Sokol Suit pressure checked at the Baikonur Cosmodrome, Tuesday, June 15, 2010. Walker, Flight Engineer Doug Wheelock and Soyuz Commander Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

The Soyuz TMA-19 spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Sunday, June 13, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Doug Wheelock, and Russian Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit (NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Shannon Walker has her Russian Sokol suit prepared for launch by technicians at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Doug Wheelock launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Shannon Walker has her Russian Sokol suit prepared for launch by technicians at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Doug Wheelock launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

The Soyuz TMA-19 spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Sunday, June 13, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Doug Wheelock, and Russian Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit (NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Shannon Walker has her Russian Sokol suit prepared for launch by technicians at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Doug Wheelock launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Doug Wheelock has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Shannon Walker launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

The flags of the Russia, the United States and Kazakhstan are seen at the launch pad after the Soyuz TMA-19 spacecraft was rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Sunday, June 13, 2010. The launch of the Soyuz spacecraft with Expedition 24 Russian Soyuz Commander Fyodor Yurchikin, and NASA Flight Engineers Shannon Walker and Doug Wheelock is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit (NASA/Carla Cioffi)

Expedition 24 Flight Enginner Shannon Walker waves to family and friends while he waits to have his Russian Sokol Suit pressure checked at the Baikonur Cosmodrome, Tuesday, June 15, 2010. Wheelock, Flight Engineer Shannon Walker and Soyuz Commander Yurchikhin launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Doug Wheelock, center, has his Russian Sokol suit prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Shannon Walker launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

The Soyuz TMA-19 spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Sunday, June 13, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Doug Wheelock, and Russian Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit (NASA/Carla Cioffi)

The Soyuz TMA-19 spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Sunday, June 13, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Doug Wheelock, and Russian Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit (NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Shannon Walker smiles for photographers after performing the traditional door signing at the Cosmonaut Hotel in Baikonur, Kazakhstan before departing with fellow crew members, Soyuz Commander Fyodor Yurchikhin of Russia, and NASA Flight Engineer Doug Wheelock to suit up for their launch, Tuesday, June 15, 2010. Photo Credit: (NASA/Carla Cioffi)

The Soyuz TMA-19 spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Sunday, June 13, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Doug Wheelock, and Russian Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit (NASA/Carla Cioffi)

The Soyuz TMA-19 spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Sunday, June 13, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Doug Wheelock, and Russian Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit (NASA/Carla Cioffi)

The Soyuz TMA-19 spacecraft is rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Sunday, June 13, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Doug Wheelock, and Russian Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit (NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Shannon Walker has her Russian Sokol suit prepared for launch by technicians at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Doug Wheelock launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Shannon Walker has her Russian Sokol suit prepared for launch by technicians at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Doug Wheelock launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

Sherry Walker, second from right, speaks to her daughter NASA Flight Engineer and astronaut Shannon Walker after she and her Expedition 24 crew mates docked to the International Space Station (ISS), Friday, June 18, 2010 in Korolev, Russia. Walker, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Doug Wheelock launched aboard their Soyuz TMA-19 spacecraft on Wednesday, June 16 to start a six-month tour aboard the ISS.

Expedition 24 NASA Flight Engineer Shannon Walker has her Russian Sokol suit prepared for launch by technicians at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Doug Wheelock launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

The crew of Expedition 24 Flight Engineer Doug Wheelock, left, Soyuz Commander Fyodor Yurchikhin and Flight Engineer Shannon Walker, right, pose for a group photo after a press conference held at the Cosmonaut Hotel in Baikonur, Kazakhstan, Monday, June 14, 2010. The launch of the Soyuz spacecraft with Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin is scheduled for Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

The Soyuz TMA-19 spacecraft is seen at the Soyuz launch pad secured by its scaffolding at the Baikonur Cosmodrome in Kazakhstan, Sunday, June 13, 2010. The Soyuz is scheduled to launch the crew of Expedition 24 on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 back-up European Space Agency crew member Paolo Nespoli of Italy, far left, helps Doug Wheelock and Soyuz Commander Fyodor Yurchikhin with their Russian Sokol suit preparations at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 back-up European Space Agency crew member Paolo Nespoli of Italy helps Doug Wheelock with his Russian Sokol suit preparations at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Photo Credit: (NASA/Carla Cioffi)

The Soyuz rocket is seen shortly after arrival to the launch pad Sunday, June 13, 2010, at the Baikonur Cosmodrome in Kazakhstan. The Soyuz is scheduled to launch the crew of Expedition 24 on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

The Soyuz rocket is seen shortly after arrival to the launch pad Sunday, June 13, 2010, at the Baikonur Cosmodrome in Kazakhstan. The Soyuz is scheduled to launch the crew of Expedition 24 on Wednesday, June 16, 2010 at 3:35 a.m. Kazakhstan time. Photo Credit: (NASA/Carla Cioffi)

The crews of Expedition 23 and 24 are seen on a large TV screen in the Russian Mission Control Center in Korolev, Russia, Friday, June 19, 2010 shortly after the Soyuz TMA-19 spacecraft docked to the International Space Station and delivered Expedition 24 Flight Engineers and NASA astronauts Shannon Walker and Doug Wheelock, and Flight Engineer and Russian cosmonaut Fyodor Yurchikhin. Seen clockwise from top left: Mikhail Kornienko, Expedition 24 Commander Alexander Skvortsov, Tracy Caldwell Dyson, Doug Wheelock, Fyodor Yurchikhin and Shannon Walker. Photo Credit: (NASA/Carla Cioffi)

Expedition 24 Soyuz Commander Fyodor Yurchikhin, center, is escorted to the Soyuz rocket at the launch pad at the Baikonur Cosmodrome in Baikonur, Kazakhstan on Tuesday, June 15, 2010. Yurchikhin and Flight Engineers Shannon Walker and Doug Wheelock launched in their Soyuz TMA-19 rocket at 3:35 a.m. Wednesday, June 16, 2010. Photo Credit: (NASA/Carla Cioffi)

European Space Agency back-up crew member Paolo Nespoli of Italy speaks during the State Commission meeting to approve the Soyuz launch of Expedition 24 Flight Engineers Doug Wheelock, Shannon Walker and Soyuz Commander Fyodor Yurchikhin on Monday, June 14, 2010 in Baikonur, Kazakhstan. Photo Credit: (NASA/Carla Cioffi)

The Soyuz TMA-19 rocket launches from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 carrying Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin of Russia to the International Space Station. Their Soyuz TMA-19 rocket launched at 3:35 a.m Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)

The Soyuz TMA-19 rocket launches from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010 carrying Expedition 24 NASA Flight Engineers Shannon Walker and Douglas Wheelock, and Soyuz Commander Fyodor Yurchikhin of Russia to the International Space Station. Their Soyuz TMA-19 rocket launched at 3:35 a.m Kazakhstan time. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Shannon Walker, far right, Soyuz Commander Fyodor Yurchikhin, second from right, and Flight Engineer Doug Wheelock don their Russian Sokol suits at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Walker, Yurchikhin and Wheelock launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)

Expedition 24 NASA Flight Engineer Doug Wheelock, left, of the U.S. and Soyuz Commander Fyodor Yurchikhin have their Russian Sokol suits prepared for launch by a technician at the Baikonur Cosmodrome in Baikonur, Kazakhstan, Tuesday, June 15, 2010. Wheelock, Yurchikhin and Flight Engineer Shannon Walker launched in their Soyuz TMA-19 rocket from the Baikonur Cosmodrome in Kazakhstan on Wednesday, June 16, 2010. (Photo Credit: NASA/Carla Cioffi)