This is a rough diagram of the encounter. I was about .5 miles from the spot where the LEO turned around when I got my 2-bar first alert. Assuming his speed was the same as mine, that's about a mile with a slight curve in it. But it ramped to 5 as I faced the LEO, then disappeared JUST as I spotted him. I think he switched his radar off at that point, as he was just starting to cross the median. Enough time to slow, but it's an area with a LOT of Ka falses from the nearby military base. Still, I listen to Ka alerts, and I'm glad I did this time.
Red line is the cop's route, purple is mine. Pin C is where I suspect the cop was (approximately) when I got the first hit.
