Guns on the flight deck----NO
Would I be-able to shoot someone?-----YES.
It would obviously depend on the situation. You bring up the naked guy, well he was obviously a bit disturbed but a terrorist, a bloke carrying an AK or MP5 yeah no worries if it was going to aid everyones and my own safety. Without question. The only thing is 1 hand gun in a pressurised a/c and more than 1 terrorist onboard. You don't really have a chance. The only real time of use would be on the ground somewhere and possibly only in an assist situ as the boys come rolling in with their flashbangs,,,,YEAH what fun.....
O yes in answer to the first question, are the Yanks nuts?-----YES
They always have been.