On a relatively short train UP 8977, 8363, 5492, 6582, 7397, 6885 are up front. With 8904 on the rear DPU. I can only assume, this has to be a partly a power transfer.
UP's West Colton to North Platte manifest works up Cajon Pass at CP Walker.
A 181 car West Colton, CA to North Platte, NE freight makes a beautiful noise along the red cliffs of Echo Canyon.
On Independence Day 2013, a West Colton - North Platte freight arrives at UP North Yard in Salt Lake City.