The Transportation Security Administration is preparing to screen 42 million passengers at airport security checkpoints nationwide over the holiday travel season.
The holiday period starts Dec. 19 and runs through Jan. 5. The forecast for crowds going through airports during that period is up 3.9 percent from a year ago.
Travelers should allow extra time to get through security screening and ensure that they don't bring prohibited liquids, weapons or other restricted items through checkpoints.
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