iss031e157874

ISS031-E-157874 (19 June 2012) --- European Space Agency astronaut Andre Kuipers, Expedition 31 flight engineer, prepares for a Sokol suit standard leak check in the Soyuz TMA-03M spacecraft in preparation for his return to Earth. Kuipers, Russian cosmonaut Oleg Kononenko and NASA astronaut Don Pettit are scheduled to undock from the International Space Station on July 1, 2012.