FILE - In this Dec. 22, 2011, file photo, travelers check their luggage at an United Airlines baggage claim area at O'Hare International Airport in Chicago. Airlines are slowly, steadily recovering from their meltdown five years ago, when, under the strain of near-record consumer travel demand, their performance tanked. Industry performance for all four measurements was slightly better in 2011 compared with 2010, according to the report being released Monday, April 2, 2012. (AP Photo/Nam Y. Huh, File)
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