Mastracchio signs Mission Patch in A/L

ISS039-E-020702 (13 May 2014) --- NASA astronaut Rick Mastracchio, Expedition 39 flight engineer, places his crew patch on the wall in the Quest airlock of the Earth-orbiting International Space Station, continuing a Quest-based tradition of station crew members who have participated in space walks on their current flights. A short time later, Mastracchio joined Expedition 39 Commander Koichi Wakata of the Japan Aerospace Exploration Agency and Flight Engineer Mikhail Tyurin of Roscosmos as they departed the orbital outpost in a Soyuz vehicle.