Holiday Travel Begins At Chicago's O'Hare Airport Ahead Of Christmas Week

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A sailor gets some rest on a cot in the hallway outside the USO as he... News PhotoAirport,Bestof,Bestpix,Business,Chicago - Illinois,Commercial Airplane,Corridor,Finance,Flying,Full Length,Horizontal,Human Interest,Illinois,O'Hare Airport,Resting,Sailor,Topics,Topix,Transportation,Travel,USA,USO,WaitingPhotographer Collection: Getty Images News 2012 Getty ImagesCHICAGO, IL - DECEMBER 21: A sailor gets some rest on a cot in the hallway outside the USO as he waits to catch a flight at O'Hare International Airport on December 21, 2012 in Chicago, Illinois. Today is the busiest air travel day of the Christmas holiday, with an estimated 200,000 travelers expected to travel through O'Hare today. (Photo by Scott Olson/Getty Images)