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ISS013-E-63503 (3 August 2006) --- Astronaut Jeffrey N. Williams, Expedition 13 NASA space station science officer and flight engineer, brushes up on a task list prior to egressing a station airlock to go on to perform a 5-hour, 54-minute excursion which he shared with European Space Agency astronaut Thomas Reiter (out of frame). For part of the spacewalk, the pair worked closely in tandem, and then worked separately, getting ahead of their timeline, thus enabling the two to tack on extra tasks.
