Why do some people look behind them both ways after unloading their gun at a target? Is it that they are training themselves to look for a perp coming from behind? if that the case it makes no sense when they have no rounds left in their gun. I don't know why they do it but it sure looks dumb..... I don't see everyone do it, just some. take a look at this guy doing if you don't what I'm talking about... skip to about 1:10
http://www.youtube.com/watch?v=J0HkjXpQBxc