A friend of mine recently had an incident that made me wonder something. He has brain damage from a severe wreck about 5 years ago, was in a coma and came out, spent time at Shepard Center getting all his motor functions back, and was told that he needed to avoid hitting his head because a hard hit might kill him now or cause more damage. Recently some idiot who out weighs him by 150 pounds (305 lbs vs 160) tried to start a fight with him in a resturaunt and pushed him back about 6 feet, the manager threw both of them out. He is not the fighting type and does'nt want to get hit in the head, but this guy want to pound him. Finally the question. If he were packing, givin his condition, would he be justified and pulling it, and/or shooting the other guy if he did not retreat?