I have edited my original post to exclude any information about the incident. Nobody was injured in the incident. The cops had around a dozen or more witnesses that confirmed my statement and that the guy was threatening immanent bodily harm and death and attempting to gain entry to my vehicle for that sole purpose. They caught up to the suspect about an hour later and he was very drunk, and possibly under the influence of other mind altering drugs. They did not arrest him, but made a report, and if he made any more trouble, they were going to take him to jail. I was also on the phone with the 911 operator the entire time, so they heard the entire incident from start to finish. If I had known he was following me, I would have kept driving. I live in Washington state, which I believe is a stand your ground state. Although it could be argued that I had a safe path of retreat, I would have had to take my eyes off my assailant, that I didn't know if he was armed or not, take my hand off my gun, fish through my pocket, and get my keys into the ignition. That is 5-8 seconds where he could retrieve a firearm from his waistband and shoot me, all while I was searching for my pocketed keys. It does not sound like there will be any prosecution, but I am playing it safe... I have a number of a criminal defense lawyer in my pocket, and have thoroughly documented everything.