JSC2007-E-46545 (18 Sept. 2007) --- Astronaut Scott E. Parazynski, STS-120 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. Astronaut Douglas H. Wheelock, mission specialist, assisted Parazynski.