I have been cut up before and I can tell you that the way he goes after the kid in the beginning is the way it goes down. The only thing that saves you in most fights is the ability to muster pure primal aggression in an instant. Your Krav Maga/self defense classes cannot prepare you for the real world. The techniques they teach are nearly useless. It's always good to learn all you can, but don't depend on some choreographed BS technique when the time comes to fight for your life.