Circular UFOs spotted over Greensboro, NC

On February 3, 2015, an inhabitant of Greensboro (in North Carolina, USA) has taken a couple of photos very strange. In fact, on these, we can see two circular-shaped UFO flying above habitations…

Witness statement:

I was taking a couple of shots of the huge moon and when I looked at the pics there were these light orbs. They are not refracted light and in the second shot they have moved away in a path. I took the photos myself only seconds apart and in the short amount of time the crafts moved a pretty good distance. They are not water droplets because I took the photos with my iPhone 6 plus that was not wet or anything. They are not planets or starts of headlights these craft are invisible to the naked eye and can only be caught with a camera lenses. I am baffled as to what they are and why are they here?