Well, to me there's a difference in intimidation and just plane scared. If somebody pulls a gun on me they rule the school and I've let my instincts kick in and I was calm. Both times it work out for me. I never did get a sense of fear before during or after.
I can't think of a time I ever was intimidated by a gun. Now a large vehicle coming at me, well I never did quite crap my pant, it always happens so fast.