ISS036-E-017517 (9 July 2013) --- European Space Agency astronaut Luca Parmitano (left) and NASA astronaut Chris Cassidy, both Expedition 36 flight engineers, are pictured in the Quest airlock of the International Space Station as they prepare for the start of a session of extravehicular activity (EVA). Parmitano and Cassidy are wearing Extravehicular Mobility Unit (EMU) spacesuits.