Bare feet to pat-downs: Five big changes in TSA screening at airports

Security screening at US airports has undergone waves of changes in the years since the terror attacks of September 11, 2001.

Shoes scanned

Chitose Suzuki/AP/File
A Transportation Security Administration worker watches a man take off his shoes at a checkpoint at Boston's Logan International Airport in this Nov. 9, 2004 file photo.

The requirement to remove one's shoes at airport security checkpoints can be traced to Dec. 22, 2001. That's the day admitted Al Qaeda operative Richard Reid tried and failed to ignite explosives hidden in his shoes while aboard American Airlines flight 63 from Paris to Miami.

Security protocol fluctuated at airports in the days following the attempted attack, but eventually everyone traveling through airport security checkpoints was required to remove their shoes and pass them through X-ray machines.

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