Stock Photo - The prime and backup crews for the launch of the Soyuz TMA-19 spacecraft to the International Space Station conduct their ceremonial tour of Red Square May 31, 2010 prior to flying to the Baikonur Cosmodrome in Kazakhstan for final prelaunch preparations. From left to right are prime crew members -- NASA astronaut Doug Wheelock, flight engineer; Russian cosmonaut Fyodor Yurchikhin, Soyuz commander; and NASA astronaut Shannon Walker, flight engineer -- along with backup crew members -- NASA astronaut Cady Coleman, Russian cosmonaut Dmitry Kondratyev and European Space Agency astronaut Paolo Nespoli. Wheelock, Walker and Yurchikhin are scheduled to liftoff June 15 to the International Space Station. Stephanie Stoll