You’d be taken into custody!! Happened to me @ the Van Nuys Airport LA back in '92… I saw a friend who’s name was jack, I said out loud from across the boarding terminal , “Hi Jack”, Jack, Jack Hanna, of the cartoon fame “Hanna Productions” was boarding a plane to Dallas/Fortworth the “X” now & I were going north… 10 seconds later several security were in front of us…we were detained for over 2 hrs missed the flight and had to catch the next one… !!! I DID’T SPEAK TO A !!!■■■■■■■!!! soul for the next 4 hours until we reached our destination, and all the time my middle fingers were in the “AIR”!! Haven’t flown since…