I have been an LEO for 27 years. I cannot tell you of the number of fights I have been involved in. I do not draw unless I am in fear of my life. At 6' and 240 I try to stay in shape, it makes a BIG difference. I can count the number of off duty fights much more easily. Those that have a physical disability will find that it is much easier to justify escalating force. Try to talk your way out of the fight, when it is time to fight, FIGHT, overwhelm the BG with violence. Never, ever, bluff. If you are not prepared to follow through do not indicate that you are. A non deadly force device is nice to have, especially, if you are not a trained fighter.