10/20/16 - 8:33 pm pt, took the dog out to the back yard, looked up at the night sky and observed a fast moving triangular shaped object with 6 dim white lights (one on each corner and in the middle of each side) black as the night sky, almost transparent. smooth and quiet, like nothing ive ever seen before. the fight or flight mentality took hold, i observed it until it went below the roof line of the house next store. flew in a w/sw direction, approx 1000 ft elevation appeared approx 80-100 feet long. shortly after going behind a roofline a plane was observed flying in the opposite direction at a higher altitude, approx 4000 feet. total time was approx 10 seconds.