JSC2006-E-49773 (16 Nov. 2006) --- Astronaut Clayton C. Anderson, Expedition 15 flight engineer, salutes as he dons a training version of the Extravehicular Mobility Unit (EMU) space suit prior to being submerged in the waters of the Neutral Buoyancy Laboratory (NBL) near the Johnson Space Center.
Photographer Regan Geeseman