It’s a bit of a cheat, but sometimes the best shot of a train is on the rear, particularly if the Distributed Power Units are facing rearward. Such was the case with Union Pacific train WELYUZ-20, a work train consisting of Herzog ballast cars that originated in Elsey CA and is headed to Yuma, Arizona, approaching the Canyon Siding near the landmark Mormon Rocks on a snowy morning. Bringing up the rear are two DPUs, UP AC6000CW 7640 and Kansas City Southern ES44AC 4685, looking a bit faded but still a welcome sight in its "Retro Belle" colors. (Cajon Pass, California – January 25, 2021)