A colorful object was hovering over the Petroglyphs, which backed up to my back yard, and it had no sound.

It was late in the evening when I called my girlfriend in California.  I looked out my window to the backyard and saw this, I guess cigar shaped object hovering over the Petroglyphs.  I went out the door to get a better look.  My first thought that it was a blimp, due to the fact that I was from Los Angeles and they were seen many times in the skies there.  The object had colorful lights, which was not in step with the airplanes or helicopter lights.  The object was just hovering, and then it struck me, THERE WAS NO SOUND COMING FROM THIS OBJECT.  I was still on the phone with my friend and was telling her all about what I was seeing.  I started getting concerned and moved back into my home as I have two small boys.  I continued to watch this object and when it started to finally move, it moved very slowly and then it went away in a flash.  I called the police and asked them if Kirtland AFB was testing some prototype and they said they had no knowledge.  Meanwhile, my friend was still on the phone.  I am an Executive Secretary by trade and the next day at work I told some of my co-workers, and they all laughed. But I know what I saw.  I will report another incident that occured during  the last major meteor shower last year.