NASA - National Aeronautics and Space Administration

ISS018-E-041344 (21 March 2009) --- Astronaut Steve Swanson, STS-119 mission specialist, attired in his Extravehicular Mobility Unit (EMU) spacesuit, prepares for the mission's second session of extravehicular activity (EVA) in the Quest Airlock of the International Space Station while Space Shuttle Discovery remains docked with the station. Astronauts Tony Antonelli (left), STS-119 pilot; and Japan Aerospace Exploration Agency's (JAXA) Koichi Wakata, Expedition 18 flight engineer, assist Swanson.

ISS018-E-041348 (21 March 2009) --- Astronaut Joseph Acaba, STS-119 mission specialist, attired in his Extravehicular Mobility Unit (EMU) spacesuit, waves as he prepares to leave the Quest Airlock of the International Space Station to begin the mission's second session of extravehicular activity (EVA).

ISS018-E-041352 (21 March 2009) --- Astronaut Tony Antonelli, STS-119 pilot, watches his 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).

ISS018-E-041353 (21 March 2009) --- Astronaut Tony Antonelli, STS-119 pilot, uses a communication system while referring to a checklist in the Quest Airlock of the International Space Station while Space Shuttle Discovery remains docked with the station.

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).

ISS018-E-041363 (21 March 2009) --- Astronaut Steve Swanson, STS-119 mission specialist, attired in his Extravehicular Mobility Unit (EMU) spacesuit, exits the Quest Airlock of the International Space Station to begin the mission's second session of extravehicular activity (EVA).

ISS018-E-041370 (21 March 2009) --- Astronaut Sandra Magnus, STS-119 mission specialist, prepares to work with the Lab-on-a-Chip Application Development-Portable Test System (LOCAD-PTS) experiment in the Destiny laboratory while Space Shuttle Discovery remains docked with the International Space Station. LOCAD-PTS is a handheld device for rapid detection of biological and chemical substances onboard the station.

ISS018-E-041409 (21 March 2009) --- Astronaut Tony Antonelli (left), STS-119 pilot; and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 18 flight engineer, prepare to open the hatch door in the Quest Airlock of the International Space Station for the returning spacewalkers as the mission's second session of extravehicular activity (EVA) draws to a close.

ISS018-E-041411 (21 March 2009) --- Astronaut Tony Antonelli (left), STS-119 pilot; and Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 18 flight engineer, assist astronaut Steve Swanson and Joseph Acaba (out of frame), both STS-119 mission specialists, as they return to the Quest Airlock of the International Space Station as the mission's second session of extravehicular activity (EVA) draws to a close.

ISS018-E-041420 (21 March 2009) --- Astronaut Joseph Acaba, STS-119 mission specialist, attired in his Extravehicular Mobility Unit (EMU) spacesuit, is pictured in the Quest Airlock of the International Space Station as the mission's second session of extravehicular activity (EVA) draws to a close.