My problem with having guns in the flight deck is:
1. a potential hijacker will KNOW that there's a gun on board, which solves one of his problems;
2. training & recurrent training on gun handling;
And regarding those armored flight deck doors - what's to happen if we are knocked out in a crash, and the cabin crew can't open the ****ing door to get to us?
Let's get better-trained personnel manning better equipment at our airport screening stations. Let's NOT saddle pilots with more resposibility than we already have.