At some time we have all waited patiently (or more likely impatiently) in line behind them in airports, cinemas, banks, theatres, nightclubs, public events and so on.
Did you know most airports have a potential weapon within reach of angry customers hands that could kill? They have in the past.
Sounds absurd, doesn't it?
High security airports allowing this potential hazard to exist - no way! I'm not even kidding you when I say that nightclubs also have this threat.