"The worst kind of "muscle memory' is the kind a poster on another site once described.
He stated that he had trained himself to automatically, without thinking, turn, draw, and fire at a sound behind him because it meant that someone was "sneaking up" on him."
So, assuming he carried concealed at least sometimes, he would have to have shot multiple people, if he didn't get locked up after the first one. I realize that you said this was a poster on a forum, not someone you know, but someone stating that they have trained themselves to take that action is total BS. Mark