NASA astronaut Kevin Ford, STS-128 pilot; and Canadian Space Agency astronaut Robert Thirsk (obscured), Expedition 20 flight engineer, work controls of the station's robotic Canadarm2 in the Destiny laboratory of the International Space Station in this NASA handout photo taken September 1, 2009. REUTERS/NASA/Handout (UNITED STATES SCI TECH) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS