formations over phoenix

Not sure if this was a UFO or something else. I thought I would report it and let you decide. I will give preliminary details now, and if you want more let me know.
This was early in the morning we saw 5 ligts hovering over the mountains to the north. At first we thought nothing of it, until after about an hour the lights began to move rapidly to the west for about 20 seconds, and then they went straigt up and disappeared.
There were more sightings, and possibly a landing area witnessed by me and my two friends.
I don't want to send all details right now because I am a little embarrased as it is. I have never believed in UFOs and I am still not sure I do! If you have other witnesses to this, or know what it is you would help me alot. I have been keeping this to myself, (one friend has since passed away of cancer, the other moved out of the country, although I still talk to him occasionally).
Witness indicates that the date of the sighting is approximate.  PD