SSATA Crew Training and EMU Verification for STS-135 astronaut Rex Walheim

JSC2011-E-026878 (11 March 2011) --- NASA astronaut Rex Walheim, 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