What Prohibited Items Have Travelers Knowingly Brought Through Airport Security?
A survey has found that more than 20 percent of airplane passengers had knowingly or unknowingly smuggled prohibited items past TSA checkpoints onto the aircraft, including at least 6 percent who boarded the plane while unintentionally carrying prohibited knives or other bladed objects.
Less than 1 percent claimed that they discovered belatedly that they had mistakenly traveled with firearms, ammunition or explosives.