Shawn Vincent and Don West look at how retired MMA fighter Shannon “The Cannon” Rich found himself in an argument over a parking space when the other guy attacked him with a knife. Rich retrieved a pistol from his vehicle and fired a lethal shot in self-defense. Eyewitness accounts and security footage matched Rich’s statement to police and he was not charged, but the experience provides lessons for concealed carriers about the value of de-escalation and some insight on how to navigate post shooting interactions with law enforcement.