A passenger in March at Bradley Hartford International Airport in Connecticut had a loaded .38-caliber pistol containing eight rounds strapped to his lower left leg. At Salt Lake City International Airport, a gun was found inside a passenger's boot strapped to a prosthetic leg.
TSA doesn't believe these gun-toting passengers are terrorists, but the agency can't explain why so many passengers try to board planes with guns, either, Castelveter said. The most common excuse offered by passengers is "I forgot it was there."
"We don't analyze the behavioral traits of people who carry weapons. We're looking for terrorists," he said. "But sometimes you have to scratch your head and say, 'Why?'"
Many passengers found to have guns by screeners are arrested, but not all. It depends on the gun laws where the airport is located. If the state or jurisdiction where the airport is located has tolerant gun laws, TSA screeners will frequently hand the gun back to the passenger and recommend locking it in a car or finding some other safe place for it. The government doesn't track what happens to the people who are arrested.
Is it plausible that some people are so used to carrying guns that they simply forget that they have them, even when they're at an airport about to walk through a scanner? Or do some people try to bring their guns with them when they fly because they think they won't get caught?
Jimmy Taylor, a sociology professor at Ohio University-Zanesville and the author of several books on the nation's gun culture, said some gun owners are so used to carrying concealed weapons that it's no different to them than carrying keys or a wallet.