Alright! People better start behaving better on planes! These days you can get your teeth knocked out if you act strange! Can't blame passengers, they are doing what they have to since 911! Can't expect the airline security to do much good.
The TSA doesn't profile passengers when the are searching people boarding planes. So I have made it a habit to do my own 'profile sweep' of the passengers on the plane when I fly. If there are 2 or more people that fit my profile of a potential terrorist I note where they are seated and pay attention. If 2 of them get up at the same time I am going to deck the one closest to me. If I am wrong I guess I will have to apologize, but better safe than sorry.