ISS013-E-60795 (28 July 2006) --- Attired in his Extravehicular Mobility Unit (EMU) space suit, astronaut Jeffrey N. Williams, Expedition 13 NASA space station science officer and flight engineer, prepares for a session of extravehicular activity (EVA) scheduled for Thursday, Aug. 3, 2006. Williams is in the Quest Airlock of the International Space Station.