I found a nice little base, one of those public works spots. I dropped a bunch of stuff off there and noticed there was a Military Baes north of it, just at the edge of vision range, so I could see a Zombie Soldier and a turret. But not near enough for them to aggro me.
So then I ran south and cleared a few houses. But when I came back to the public works, a bunch of turrets had “traveled” south and were right on the public works. What’s up with that/