The incident Monday at New York's Kennedy Airport is being investigated by the Transportation Security Administration, the agency that was created to protect the nation's airports after the 2001 attacks.
A breach that allowed 11 people to walk through an unattended security checkpoint lane at one of the nation's busiest airports has some travelers scratching their heads about how this could happen even with the enhanced security measures put in place after the September 11 terror attacks.
The incident Monday at New York's Kennedy Airport is being investigated by the Transportation Security Administration, the agency that was created to protect the nation's airports after the 2001 attacks.
The TSA said three passengers did not receive required secondary screening after they set off the metal detector at the unmanned checkpoint lane.
At Boston's Logan International Airport a staging point for two of the jetliners used in the 9/11 attacks some travelers said they were surprised that a checkpoint lane could be left unattended at any airport.
"Mistakes happen, but (they're (TSA workers) supposed to be there to protect our lives," said Kylie Welsh, who returned to Boston from a trip to Pittsburgh yesterday.
The TSA said in Monday's incident that all carry-on bags received required screening and that it was confident the incident presented "minimal risk to the aviation transportation system."
Post-9/11 security procedures include body scans, pat-downs, fortified cockpit doors, screening of checked luggage for explosives and a ban on large containers of liquids to prevent anyone from making an improvised explosive device during flight.
This isn't the first time travelers who weren't properly screened slipped through airport security.
In 2002, hundreds of passengers were evacuated at Fort Lauderdale-Hollywood International Airport in Florida after a metal detector was found unplugged. About 300 passengers were rescreened and allowed back into the concourse.
In 2014, a woman who had been arrested multiple times for trying to sneak onto planes managed to slip onto a flight from San Jose to Los Angeles without a ticket.
In 2015, a Texas man walked through a security checkpoint without a ticket or identification at Dallas-Fort Worth International Airport and ran onto an American Airlines flight bound for Guatemala. He was arrested on a criminal trespassing charge.
"Unfortunately, it's not as rare as it sounds," said Jeffrey Price, a professor of aerospace management at Metropolitan State University in Denver and author of the 2008 book, "Practical Aviation Security: Predicting and Preventing Future Thefts."
"The biggest thing I don't understand is why would everybody just walk away? What went wrong that that last person figured they could just wander off and leave the checkpoint abandoned?" Price said. "I'm sure every TSA person there knows you just don't walk off and leave an access point open."
(This article has not been edited by DNA's editorial team and is auto-generated from an agency feed.)
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