As part of a publicity opportunity, the Union Pacific assigned 4-6-6-4 Challenger 3985 to an unusual freight assignment: a massive, 143-car, 7,657 ton double-stack intermodal train. This program takes you along for the historic event as 3985 leads the 8900-foot long train out of Cheyenne, Wyoming and muscles it along the UP mainline to North Platte, Nebraska. Footage also includes tests conducted on 3985 in preparation for the event. Color, 1 hour. #0RV6530