Expedition 25 Flight Engineer Shannon Walker is carried to a nearby medical tent following the landing of the Soyuz TMA-19 spacecraft near the town of Arkalyk, Kazakhstan on Friday, Nov. 26, 2010. Russian Cosmonaut Fyodor Yurchikhin and NASA Astronauts Doug Wheelock and Walker, are returning from nearly six months onboard the International Space Station where they served as members of the Expedition 24 and 25 crews. Photo Credit: (NASA/Bill Ingalls)