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ISS012-E-06020 (26 October 2005) --- Astronaut William S. McArthur Jr., Expedition 12 commander and NASA science officer, works with Extravehicular Mobility Unit (EMU) spacesuits in the Quest airlock of the international space station. When the Expedition 12 crew performs its first scheduled day of spacewalking on Nov. 7, it will be attired in the NASA EMU.
