WIKIARCHIVES.SPACE

NASA astronauts Steve Swanson (left), Expedition 39 flight engineer and Expedition 40 commander, and Scott Tingle, attired in training versions of their Extravehicular Mobility Unit (EMU) spacesuits, participate in a spacewalk training session in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center. Divers are in the water to assist Swanson and Tingle in their rehearsal, which is intended to help prepare them for possible work on the exterior of the International Space Station.