I was driving with my girlfriend to her house in r.s.m. I saw a big glowing light over a hilltop in the distance ahead of us. Brighter than any light possible. We drove around the hill to get a closer look. It seemed to have moved further out in the distance. We pulled over next to the road where we saw 5 other people watching the same thing. (As we were standing there people kept driving up to see the same thing). There seemed to be a little bit of a green light coming of the top of it. It seemed to be saucer shaped with antenna or something coming off the top to emit the green light. When we pulled up a second one appeared a little higher just to the left of it. The UFOs were glowing extremely bright and slowly pulsating in brightness. We watched for about 20 minutes as both would randomly go dark and reappear and pulsate. Decided to give up and drive home after both went dark and were no longer visible. As we got to my house atop a big hill we looked out in the distance towards the beach and could see 2 extremely large mother ships. It couldn’t have been anything else because they had very bright white lights on the side of them in a row. One had 5 white lights and a little green one on the end just below the far right white light. The spot where we saw the UFOs was just over the hill in the Cleveland national forest area just east of Rancho Santa Margarita, California. Can pinpoint on map if needed to.