RENURPP - I agree with what you are saying - there needs to be a tightening of the standards across the board. However - The streaker at the cricket/soccer is funny and I suppose annoying at times. Harmless though..except for the serial pest at Australia v Iran in 98.
The idiot that starts talking about knives and hijaking whilst aboard an aeroplane isn't funny. He/ She is dangerous and should be treated as such. As if the crew want to deal with that sort of crap on top of everything else.
Think of this - say you are on the turps and get questioned by the police about whatever - do you start crapping on about something that is going to land you in strife. No - most people just say - "Yep, ok." and are on there way. The same should be on an aeroplane.
Yes, he was drunk but could act sober enough to get past everyone so therefore he should have had the presence of mind to not carry on the way he did. If he was that sloshed that he had no idea of his actions then how on earth did he get in? That I suppose bring us back to your point
.
I bet you he sobered up REAL fast once he was being escorted off the aeroplane.