This guy is a frickin' garage door genius. It's a long story involving a 12 unit residential building and two automatic garage doors one of which seemed to be possessed.
I was thinking, "I can't make ANY sense out of this mess; how the hell is anyone gonna figure this out easily - without complex, logistically difficult troubleshooting?" Tech from Master Garage Door Cary NC showed up (right on time, by the way) and figured it out in about 30 seconds. Turns out someone had a haywire remote. It had nothing to do with the devil. Whew!