JSC2013-E-065723 (3 July 2013) — Pictured from left to right, NASA astronaut Rick Mastracchio and Russian cosmonaut Mikhail Tyurin, both Expedition 38/39 flight engineers; Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 38 flight engineer and Expedition 39 commander; Russian cosmonaut Oleg Kotov, Expedition 37 fli
JSC2013-E-065723 (3 July 2013) — Pictured from left to right, NASA astronaut Rick Mastracchio and Russian cosmonaut Mikhail Tyurin, both Expedition 38/39 flight engineers; Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 38 flight engineer and Expedition 39 commander; Russian cosmonaut Oleg Kotov, Expedition 37 flight engineer and Expedition 38 commander; Russian cosmonaut Sergey Ryazansky and NASA astronaut Michael Hopkins, both Expedition 37/38 flight engineers, pose for a photo during a cake-cutting ceremony in the Jake Garn Simulation and Training Facility at NASA’s Johnson Space Center. Photo credit: NASA