JSC2007-E-113485 (17 Dec. 2007) --- Astronaut John M. Grunsfeld, STS-125 mission specialist, dons a training version of the Extravehicular Mobility Unit (EMU) spacesuit prior to being submerged in the waters of the Neutral Buoyancy Laboratory (NBL) near the Johnson Space Center. Astronauts Andrew J. Feustel (left) and Michael J. Massimino, both mission specialists, assisted Grunsfeld.
Photographer Blair