Once the Cheyenne Frontier Days special arrives in Cheyenne and its passengers detrain, the train needs to be wyed (turned around) in preparation for the return trip to Denver. The nearest why is at Speer, which is actually about eight miles away from Cheyenne. Rather than make a long (and slow) reverse move, the Granite switcher hooks on to the rear of the train. This allows the train to move at track speed. Here, UP 2525 (a fantastically shiny and new ES44AC) pulls the train through the curve, approaching the signals at Speer on Main 4.
