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Last updated on April 20, 2014 at 8:28 EDT
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August 14, 2012
NASA astronaut Rex Walheim (right), STS-135 mission specialist, participates in an Extravehicular Mobility Unit (EMU) spacesuit fit check in the Space Station Airlock Test Article (SSATA) in the Crew Systems Laboratory at NASA's Johnson Space Center. Photo credit: NASA or National Aeronautics and Space Administration