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JSC2011-E-072832
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JSC2011-E-072832

December 21, 2013
(13 July 2011) --- NASA astronaut Don Pettit, Expedition 30/31 flight engineer, participates in a routine operations training session in an International Space Station mock-up/trainer in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. A crew instructor assisted Pettit. Photo credit: NASA


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