I did not respond because I did not know what to say. It appears to be a post about why carry is needed in the airport, and then the only support is that some guy glared at you. So, drill 'im!
I sure that repeated hammerfist strikes to his cranium with a Surefire flashlight would have got his attention. (Provided he wasn't a trained martial artist or if he was illegally carrying something he shouldn't be!) I have a 6p that is small enough to carry in my pocket but hefty enough to use as a self defense impact weapon.....and legal to carry in the airport!