Astronauts Reid Wiseman and Alexander Gerst

JSC2012-E-237422 (7 Nov. 2012) --- In the simulation control area, NASA astronaut Reid Wiseman (right foreground) and European Space Agency astronaut Alexander Gerst, both Expedition 40/41 flight engineers, prepare for a spacewalk training session in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center. Wiseman and Gerst are wearing liquid cooling and ventilation garments that complement the Extravehicular Mobility Unit (EMU) spacesuit. Photo credit: NASA