The common structure to all of the California UFO Drone photos is the center circular structure with the "Staves" protruding upward. There are some interesting features protruding from the center of the hub that I will call "Loops". There are seventeen of these "Loops" on this particular "Drone". Earlier photos had sixteen of them, an interesting fact. These "Loops" appear to be directly related to the "Staves" because they are directly in line with and have the same number count.