Koichi Wakata, Rick Mastracchio and Michael Hopkins

JSC2012-E-237314 (5 Nov. 2012) --- Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata (left), Expedition 38 flight engineer and Expedition 39 commander; along with NASA astronauts Rick Mastracchio (center), Expedition 38/39 flight engineer; and Michael Hopkins, Expedition 37/38 flight engineer, are pictured during a training session in the virtual reality lab in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. Photo credit: NASA