UFO Sighting was the size of a volleyball with a shiny silver surface. It came from the north over highway 89 southbound into flagstaff. It flew overhead roughly between milepost 431 and 430. At first I thought it was a Mylar balloon until I noticed it didn't have a tarnished surface and there was no design on the surface. Before this UFO Sighting crossed the traffic median and over highway 89 north, it slowed down, made a J like turn and proceeded NE. I was driving, so unfortunately I didn't take a picture. mufon cms# 112143 Flagstaff Arizona 11/06/20
