Description: Witness states: I was shooting Ektachrome film on a warm summer evening north of Petaluma, CA in August 1976. I shot several exposures in a 5 minute period when I was able to capture this shot. Everything is silhouetted as the sun had already gone done but this was easily seen. There are four blue dots on the flat side of the object and the edge would tend to show it was moving very quickly. Enlarging shows quite the detail. I sent a copy in the early 1980s to Walt Andrus who was with MUFON then. Having this on film and going thru some strange events made me a believer. Since then, over the past twenty years I have seen a few odd things in the sky that keeps me looking up !