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ISS006-344-010 (15 January 2003) --- Astronaut Kenneth D. Bowersox, Expedition 6 mission commander, performs P1 (P-One) Truss Zenith launch lock releases on the International Space Station (ISS) during a session of extravehicular activity (EVA). Astronaut Donald R. Pettit (out of frame), NASA ISS science officer, joined Bowersox on the spacewalk.
