ISS018-E-041355 (21 March 2009) --- Astronaut Tony Antonelli, STS-119 pilot; and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 18 flight engineer, watch their crewmates through a small window on the hatch door in the Quest Airlock of the International Space Station while Space Shuttle Discovery remains docked with the station. Astronauts Joseph Acaba and Steve Swanson, both STS-119 mission specialists, were exiting the airlock to begin the mission's second session of extravehicular activity (EVA).

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