I see there is some TSA ignorance here. I work for TSA and allow me to clarify
The only way Juelz would get out of that jam is if he had a license to carry and had declared the fire arm. Also WE DO check guns and weapons once they are declared with the airlines. The Port Authority personally escorts the guns and sometimes the owner down to where we screen the bag, watch us screen the bag then take down our info and we take down their info so there is a track record of us and them controlling the fire arm at all times when it’s in transit. So Juelz running could be that it was an illegal fire arm and he was gonna get jammed up.