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S118-E-07701 (17 Aug. 2007) --- Astronaut Tracy Caldwell, on the mid deck of the Space Shuttle Endeavour, brushes her hair as she prepares to participate in the shuttle crew's supply transfer chores. Tomorrow the mission specialist is scheduled to orchestrate the intravehicular support for the crew's final spacewalk, a role she has filled on three previous occasions on this her first space flight.
