Remember the old TV series, Have Gun, Will Travel? It sees too many people are taking that too literally these days. According to a USA Today report, last year TSA agents in U.S. airports had to confiscate nearly 4,000 illegal guns from passenger check-in bags and clothing. And the numbers keep increasing every year.

Before you decide to pack heat on your next flight, it’s best not to do it. If you have a legit reason to take firearms, be absolutely sure you know the rules that apply and have the papers to prove it. And, while checking in you notice another passenger with an unauthorized weapon or other illegal item, to insure safety for everyone on the flight, report it immediately to the nearest airport security officer.