With all due respect Micah, not exactly an accurate cause and effect argument.

1) how many actual hijack attempts have occured since 9-11?

2) Of those, how many were thwarted by armed pilots? (BTW how does this number compare to the number of pilots busted for flying while intoxicated?)

3) How many hijack attempts were thwarted by increased on board security (sky marshalls)?.

The variables can go on ad nauseum (also include the fact that anyone who attempted to hijack a plane would be stomped into a greasy spot by the passengers before the pilot even got out of his/her seat to shoot).