An ACE pushes on the rear of an eastbound UP stack train as it departs Centennial Yard. UP has added a number of mainline tracks at the east end of the yard to expedite traffic flow.

With only a few minutes of sunlight left, UP 8559 leads it Tacoma, WA to Chicago, IL stack train fulled with K-Line Container rolls through Laramie Yard on its journey east.

Pacing 8559 and the GE Hybrid unit along K-61 Highway just south of Inman

UP 8559 with 3 of its counter parts have a special addition the new GE Hybrid unit with its test car.

UP Grainer dead on hours