The ramp to departures is blocked by emergency vehicles at the New Orleans International Airport on Friday night in Kenner, La. Jonathan Bachman/AP hide caption

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TSA workers sing at Los Angeles International Airport in this screen grab from a USA Today video. The chorus dons Santa hats during the holiday season and perform in the middle of the airport. USA Today hide caption

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A woman passes by a security sign at Seattle-Tacoma International Airport on Friday. Ted S. Warren/AP hide caption

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