Last night my neighbors were over visiting.. We were out back looking at the sky enjoying all the stars.. There are no city lights where we live so the sky just explodes with stars.. We started observing several satellites moving across the sky some were moving faster than others and we had a good time wondering which country owned them. Then my neighbors wife and I observed one which was just screaming across the sky (same size as the others) This was no plane which we see a lot of up here in the mountains. We watched it for 30 seconds and in that length of time it had traveled half way across the sky Then it just blinked out? Satellites just dont blink out! I dont know if it was a UFO but it sure was weird..I've seen several other groups of lights which I am sure were UFO's and made reports about them years ago but this is the first one up here south of Prescott.