ISS015-E-12293 (15 June 2007) --- Attired in his Extravehicular Mobility Unit (EMU) spacesuit, astronaut John "Danny" Olivas, STS-117 mission specialist, prepares for the mission's third session of extravehicular activity (EVA) in the Quest Airlock of the International Space Station while Space Shuttle Atlantis was docked with the station. Astronaut Clayton Anderson, Expedition 15 flight engineer, assisted Olivas.