I was standing outside at about 930pm when I looked up and I saw a very big hexagon shaped craft approx a quarter mile in diameter fly right over me. There was no sound and it had 8 lights 1 on each point resembling a hexagon. It was flying very low and only lasted about 15 to 20 seconds before disappearing. For the next 20 to 30 minutes all I saw were planes and helicopters flying every which way appearing to be looking for the craft. Unbelievable doesn't even begin to explain what I saw.