Unfortunate luck
(MDZ+ 1.9.8) I was in island 4, a blood moon occured and I went into a military base because I wanted to have some fun fighting hordes of soldiers. I quickly noticed that I had dumped an entire MP5 mag into a group of enemies and that one of them had survived despite taking most of the shots.
It was an Atlyn zombie—which I thought notorious to begin with, specially with how early he is with it being the 4th island—but I know that they don't spawn on normal bases, so he must've came from somewhere else. Another one appears, and while he chews through my ammo and kills my partner, I saw where he appeared from so I investigated and lo and behold the Humvee base was right there. It's not that crazy, but it was a cool way of finding it so I wanted to share it.
Also, footnote: I had died earlier in the run but I have all of the positive traits on so I revived; I found out that if you die while cooking an item and it's not done cooking yet, you'll spawn with the cooked steak in your inventory. I have no screenshots, it is probably a bug and it is definetly not useful, but it was another interesting thing that happened in that game.