ON LEAVING MY SON HOUSE AROUND 9;3O ON 12/22/14, MY GRANDDAUTHER SAID WHAT IS THAT. I LOOKED UP AND SAW 7-8 ORANGE ORBS, 4 CLUSTERED IN FRONT WITH 3-4 FOLLOWING AT REGULAR INTERVALS IN A LINE. SHE RAN BACK IN THE HOUSE AND MY SON AND DIL CAME OUT TO OBSERVE. WE WATCHED THEM CONTINUE N. TILL THEY MOVED BEHIND A TREE AND DISAPPEARED. THE LAST ONE MOVED TO THE LEFT DIMMED, BRIGHTEN AGAIN AND THEN FADED OUT. I LIVE ON THE FLIGHT PATH OF PHX AND THERE WERE PLANES TAKING OFF BUT THESE WERE NOT PLANES, NO NOISE AND FLYING ACROSS THE FLIGHT PATH. NOT SURE WHAT THEY WERE, WOULD LIKE TO KNOW IF OTHERS SAW THIS.