NASA astronaut Tim Kopra, Expedition 46 flight engineer and Expedition 47 commander, is pictured during an extravehicular activity (EVA) maintenance training session in the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center.
JSC2014-E-079728 (3 Sept. 2014) — NASA astronaut Tim Kopra, Expedition 46 flight engineer and Expedition 47 commander, is pictured during an extravehicular activity (EVA) maintenance training session in the Neutral Buoyancy Laboratory (NBL) near NASA’s Johnson Space Center. Photo credit: NASA/Lauren Harnett