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October 28, 2011
Astronaut Mike Massimino, STS-125 mission specialist, assists astronaut John Grunsfeld (partially out of frame), mission specialist, in the donning of his Extravehicular Mobility Unit (EMU) spacesuit on the middeck of the Earth-orbiting Space Shuttle Atlantis in preparation for the mission's third session of extravehicular activity (EVA). Astronaut Andrew Feustel, mission specialist, is at right.

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