This is no mystery. It is pure nonsense.
The FBI knows.
You can’t just build a tower anywhere you want.
You must make arrangements with the landowner.
The land owner’s name is on the deed. You simply follow the trail from there.
The cops know and the fact that everyone says they do not know tells you who it is.
The NSA or one of the other criminal government agencies.
I would suspect that the DHS is encroaching on NSA territory.
I thought the same until recently - a fellow freeper had referenced “stingray” - I asked - apparently its a mobile suitcase device