ESA astronaut Paolo Nespoli, Expedition 26/27 flight engineer, prepares to don 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. Nespoli is wearing the liquid cooling and ventilation garment that complements the EMU spacesuit. (21 September 2010, NASA photo JSC2010-E-165756)