After popping off a few rounds you realize the levity of what you have in your hands.
Believe me, knowing how to fight or shoot makes one approach situations differently than someone that is untrained.
Training equals cooler head in sticky situations.
Well I am well trained in self defense. I just inherited a weird "lose it" thing. My mum, and other relatives from her side are just the same.
Regarding training ... even cops make mistakes, and I am pretty sure (or I damnwell hope) they are pretty well trained.