I was at a bar for a UFC fight once and similar marking were in the parking lot. I had some drunk guy telling me those were marking for nuclear missile silos underground, I told him we should get some picks and shovels, dig up the missiles then we'd have our own nukes. The guy actually thought that was a great idea and went and got his friends, nothing funnier than a bunch of drunk "just bleed" bros planning to tear up a parking lot on an easter egg hunt for nuclear missiles.