Driving home when I looked at the Tucson Mountains and noticed what seemed to be a plane at first quickly come to a halt. I kept watching and saw the sphere break into 8 other smaller spheres yet they were still large enough to see with the naked eye. 5 of the spheres quickly desceneded below the original point of view and began to flicker in an, "on and off" type of motion. Almost like someone was turning on and off a series of lights. Seconds later those lights stood still and changed direction by shooting towards the nw. I didnt see them after that yet the original light continued to hover and then just faded.