Rectangle lights in circluar motion zig zagging through the sky within seconds

One day me and some friends decided to take a ride to Big Bear Mountain.  We use to meet up every Friday to have dicussion in different places about life or whatever, that week we decided to go to the mountains because my friend had camp there before and knew of a spot where the elavation was at the highest point of the mountain.  Anyway, we were all sitting there at the top of the mountain talking enjoying the view looking at the stars, which seem so close.  We saw an object in the sky that had like rectangle lights that were set up in a circluar motion and when one light went off the other one lit up.  It would move from the left side of the sky to the right side of the sky with then seconds.  I never seen of can even think of what man could possibly make in that could move that fast, "ever since that day, I do believe in UFO."
Witness elects to remain totally anonymous; provides no contact information.  PD