I teach marines how to fight and i teach them a specialized Marine fighting tactics kinda like krav maga and stuff that will get them home not inside a body bag. I also teach a local martial art class and i have had a white belt student beat the living crap out of his big brother who has mastered several martial arts and it is truely a david and goliath storie. If anyone wants some katas that will scare the living crap out of an agressor email me.
Jack Stone