We saw what seem to be a space craft in the eastern sky of northern AZ, on 10-10-10.On the night of 10-10-10 at approx. 2100 hrs we (4 ppl) saw in the eastern sky about 500 FT in the air a disk or saucer shape space craft was hovering in the air above our mesa's and local event center. It stayed there for about 2 hrs and then all of a sudden it just disapeared. The color of the craft was alternating between red, blue, green, and white. We were not under any infulence of any substances at the time.