A Russian Search and Rescue all terrain vehicle carrying Expedition 25 Flight Engineer Shannon Walker from the medical tent pulls up to a helicopter shortly after Walker, Expedition 25 Commander Doug Wheelock and Flight Engineer Fyodor Yurchikhin landed in the Soyuz TMA-19 spacecraft near Arkalyk, Kazakhstan on Friday, Nov. 26, 2010. Russian Cosmonaut Yurchikhin and NASA Astronauts 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)