I saw a silver metallic flying saucer over Traverse City, MI, speeding through the atmosphere.I was looking for a ufo that night and I looked into the northwest sky and I saw a silver metallic saucer shaped disc flying very high in the sky. It had no sound and it glowed like it was having a light reflecting upon it or glowing from within. It stayed in place for about 20 secs. and then took off very fast to the right about 500 ft. and then took off to the left the same distance and then went down about the same distance and the after about 2 mins. took off very, very fast out of sight.((NUFORC Note: Witness describes self as a medical professional. Date is approximate. PD))