JSC2011-E-016254 (9 Feb. 2011) --- NASA astronaut Sandy Magnus, STS-135 mission specialist, dons a training version of her shuttle launch and entry suit in preparation for a water survival training session in the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center. United Space Alliance suit technician John Hazelhurst assisted Magnus. STS-135 is planned to be the final mission of the space shuttle program. Photo credit: NASA or National Aeronautics and Space Administration