The actual story of this incident is this.
The two men had gotten into an argument about driving. Mr. King left the scene to Safeway and purchased items. The gentlemen who was shot was waiting in the parking lot for Mr. King and approached him with an axe, swung and hit Mr. King. Mr. king is an Arizona Ranger. He stupidly left his firearm in the car while he went to the store. Lucky for him he was able to retrieve his firearm and save his own life.
I know this because my parents are Arizona rangers. it's lovely how the news doesn't report all of the incident.