I’ve made no judgement on Files’ claim to be the shooter, but he has all sorts of information in just the last 30 or so minutes that’s magically delicious! This interview is from November 2003 and notes say that Files was paroled and is alive today (82 yrs. old).
I’ve set the mark to begin at 2:14:00. Minute 2:38:15 helps confirm my research, and I believe him. The last 30 minutes should whet the appetite, and I will leave it to you to decide about listening from the beginning. I do suggest you watch the written opening, as it gives you some good background.