A passenger may say they forgot or didn’t know a prohibited item was in their bag, or falsely claim that something they’re trying to get through security — possibly a new souvenir from their travels — was allowed through screening the last time, even though there wasn’t a last time. But while a minor lie or unintentional omission might only lead to extra screening and delays, more serious deceptions could result in hefty fines or even criminal charges. Find out what could happen if you lie to a TSA officer.