JSC2011-E-013869 (28 Jan. 2011) --- NASA astronaut Steve Bowen, STS-133 mission specialist, attired in a training version of his Extravehicular Mobility Unit (EMU) spacesuit, prepares for the start of a spacewalk training session in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center. NASA astronaut Michael Barratt, mission specialist, assisted Bowen. Photo credit: NASA or National Aeronautics and Space Administration