JSC2010-E-187203 (22 Nov. 2010) --- NASA astronaut Ron Garan, Expedition 27/28 flight engineer, dons a training version of his Extravehicular Mobility Unit (EMU) spacesuit in preparation for a spacewalk training session in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center. NASA astronaut Chris Ferguson, STS-135 commander, assisted Garan. Photo credit: NASA or National Aeronautics and Space Administration