Go look at the drone pics. It's a false stone facade. It's supposed to look like a cinder block building - like is commonly used in hurricane zones - but it's actually a phased array radar system, masquerading as a building. The dome is a radome covering, most likely, a transmitter, and the dual owl statues are probably klystrons. I plan on doing some images to document the similarities.

There is more, but, basically, the private islands are operating as a clandestine FVEY spying apparatus with possible missile-detection (and/or launch/guidance capabilities. Define Hostage, remember?) and hidden HAM frequencies.

And, yes, I realize some of the above would require satellite linkage, hence, motherfucking Space Force.

Edit to add: I don't mean that the islands are literally FVEY but FVEY-esque in that they are basically operating private spying and defense systems.