A friend of mine sustained a very severe head injury about two years ago and has never been the same since. Last night he got into a brawl and was knocked unconcious by the fighter. I heard that the blows from the fight weren’t that serious. He got up and walked away from the fight, however, later he began puking up blood and others called an ambulance. He was flown out by helicopter to a critical care unit in Westchester County. He is currently under a medicated coma and is on life support. Whats the chance of surviving TWO head tramas?