Former U.S. Congresswoman Gabrielle Giffords (C) stands with her husband Mark Kelly (R), NASA astronaut and commander of mission STS-134, and mountain guide Vincent Lameyre before Kelly and two other astronauts walk from L'Aiguille du Midi to the Refuge des Cosmiques near Mont-Blanc in Chamonix July 23, 2012. REUTERS/Denis Balibouse
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