How on earth is anyone going to concentrate on flying an aircraft with somebody trying to kell them? Guns in the cockpit are LAST RESORT ONLY!!!!!!!!! and the pilots WILL BE TRAINED!!!!! to HIGHER STANDARDS than the marshalls are now. Me personally, I have owned and been around firearms my whole life and I am quit aware of the responsibilities and ramifications of carrying one.
Holy super pilot... better than an air marshall? That would take a bit of extra training.
There's gotta be better ways to keep from being kelled.