black disk flipping over or rolling over end to end.We were walking the dog in our neighborhood and saw a black disc in the sky. There was still plenty of light in the sky and we could see it clearly.It made no noise. I saw an object last month like this also. This was only one block away from that previous sighting. This time it was higher but it behaved in the same way, flipping or rolling over end to end. It moved very slowly upwards and southwesterly. I don't know of any manmade craft that can fly so slowly. Even a balloon would rise more rapidly. When I ran to get the camera my daughter saw it give off a whitish light. By time I got back it was higher in the sky and I took six pictures. I don't know why but there is not even a black dot on any of the images. Nothing showed up. We watched it until we lost sight of it because it got too high, 8:30 to 8:40.((NUFORC Note: One of four reports from same witness. We believe the witness implies an evening sighting. We have amended the time here to 20:30 hrs.. We will request that the other witness submit a report, as well. PD))