NASA astronaut Rick Mastracchio (left background), Expedition 38/39 flight engineer; and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata (right), Expedition 38 flight engineer and Expedition 39 commander, participate in a space station EVA planning and preparation session in the Space Vehicle Mock-up Facility at NASA's Johnson Spa
JSC2013-E-076971 (23 Aug. 2013) — NASA astronaut Rick Mastracchio (left background), Expedition 38/39 flight engineer; and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata (right), Expedition 38 flight engineer and Expedition 39 commander, participate in a space station EVA planning and preparation session in the Space Vehicle Mock-up Facility at NASA’s Johnson Space Center. Crew instructors Megan Murphey and Michael Dino assist the crew members.