Eight bright lights in sky that I mistook for stars until they started to move in formation

On 8/15/10 between 8:00pm and 8:30pm I took my dog out for a walk and when I opened the door and looked up in the sky I saw eight round lights which I first thought was the big dipper, but I quickly noticed that the moon was so much higher and the lights where big and very bright and very low. I called for my brother and his aide to come and look at the strange sky;  I screamed when the lights started to move in a round formation then three lights moved away by themselves and went around in a circle. Then they stopped moving there was complete silence no noise came from them.  Then a jetliner came and they took off in different directions so quickly. I watched one until it looked like a star.
 I’m calling them lights since that is all that we saw they were so bright but they did not illuminate the ground or the sky.