I would love the opportunity to retreat but polio took that option away from me. I am in a mobility chair and as far as I know most able bodied bad guys could probably out run me unless I get a souped up model. This being said, I would try everything in the world to avoid deadly force. I know it should only be used in an immediate and unavoidable threat of death or grave bodily injury to yourself or an innocent person. If it came down to it, yes I would use ultimate force if forced to. If our screwed up justice system continues to persecute innocent people who only defend themselves then so be it. Life happens!