American soldiers are training allied Afghan troops how to lie down. I don't mean anything figurative or metaphorical. I mean, literally, we're teaching battle-tested Afghan warriors how to lie flat on the ground, as in what you do when you fire your rifle in the prone position. At first I thought I was missing something. Learning how to shoot from the prone position is one of the first things you learn after basic gun safety. It also seems like common sense; in battle, one of the tricks to surviving is to make yourself as small a target as possible. Heck, ...