Expedition 48 NASA Astronaut Jeff Williams during underwater training for International Space Station maintenance extravehicular activity (EVA) or spacewalk training at the Houston, Texas Neutral Buoyancy Laboratory (NBL) on Jan. 26, 2015.
Expedition 48 NASA Astronaut Jeff Williams during underwater training for International Space Station maintenance extravehicular activity (EVA) or spacewalk training at the Houston, Texas Neutral Buoyancy Laboratory (NBL) on Jan. 26, 2015.