Started out like a narrow vertical smoke stream, then separated into two sections. The upper section move upward then changed form,then circled the lower section that formed into a triangler shape. The triangle object was moving away from us going straight west.the upper object form was hard to see but then disappeared. The triangler object was visable for 15 mins after the upper object was gone. Others driving west on had to see it. Possible over Hermisto, Oregon, or further west. We watched it until the sun set and its distance made it fade away.