While standing on my front porch looking west I noticed a white light about 4 inches in sizes. The white light was not moving and at first I thought it was a plane coming into the local airport. After a few seconds I noticed that it was not moving.I then watched the white light as it made a complete circle in the sky. The light seemed to move a large distance while making the circle and was smooth in its movement. Then when it had came back to the same spot, it took off at a great speed heading straight up. I used to fly as a flight medic in a helicopter and have flew in planes, and I have never seen anything move so fast in my life. I also must add that I did notice a plane fly at or about 30 thousand feet heading west.