My best friend & I always went out to the desert to show people the lights in the desert. No one ever could say for sure what they were. They usually appeared in sets of 3. Sometimes only 1 or 2 in a different color. Weve seen some ascend but usually the will appear & reappear some where close by. We could sit there for hours watching them move. I brought a scope one time but could never say what it was. Maybe a government base in the mountains by the hoover dam?