One day in 1994, Doug Burns was leaving an appointment at Mass General Hospital when he was set upon by a thug standing over 6 feet tall and weighing more than 300 pounds. The criminal first battered Burns and when Burns protested the assault the thug threw a weapon at Burns and then charged Burns. Burns then drew his licensed handgun and shouted at the attacker to stop and then yelled at everyone nearby to call 911. Many calls were then received by 911, telling of the attack and how the victim was holding the criminal at gunpoint. When the...