UFO Sighting in Friday Harbor, Washington on 2017-12-01 20:15:00 – Very fast movement forward, then sideways, backward, at sharp angles & sometimes not

My friend was smoking outside and first spotted these objects in the evening sky, and brought them to my attention, i did get footage of these objects. december 1, 2017 at 8:00 - 8:15 pst, last light was 4:54 p.M., so it was dark, but clear, low clouds moving with a south wind, the moon was big and bright. from the north to south direction these objects appeared in the night sky, at a higher altitude than the clouds, as individual lite objects or lights, flashing intermittently and the path of travel was observed to be forward, then sharp fast right turn, backward and irregular, and then forward again, the speed was very fast when they made these turns and direction changes, were not in formation, there were more than thirty of them that in the course of fifteen minutes traveled south out of my view. my initial reaction, as i have always been a skywatcher, was astonishment, and i was really convinced that what i had seen was definitely to me unidentified, something i have never observed. my friend, too, was astonished. i was a little afraid, as thoughts went through my head.