The crew of UP 1865 (long snoot SD40N) calls it a day after working the yard in LaSalle, Colorado.

UP 1817 (SD40N) and other light power sit in an echelon right formation in the Union Pacific's North Yard in Denver, Colorado.

UP 1826 (SD40N) sits in the North Yard next to the motors belonging to the Rocky Mountaineer. Also note the UP heritage Rio Grande SD70ACe sitting at the service island.

A nice variety of motors occupy the Union Pacific's North Yard in Denver, Colorado.

Heavy snow is falling fast as light power works the Union Pacific's North Yard in Denver, Colorado.

Heavy snow is falling as UP 1817 (SD40N) leads a three motor lash up as it heads to the North Yard in Denver, Colorado.

Heavy snow falls in the UP's North Yard, catching three light motors in an echelon formation as they each work a track.

UP 1826 (SD40N) moves a cut of hoppers for sorting in the Union Pacific's North Yard in Denver, Colorado.

UP 1826 (SD40N) passes three BNSF motors that are sitting in the Union Pacific's North Yard in Denver, Colorado.

Light power, including UP 1826 (SD40N) works the North Yard in Denver, Colorado.

UP 1997 (SD40N) and other light power wait in the Union Pacific's North Yard for assignments as heavies fuel and sand up at the servicing islands.

UP 1826 (SD40N) works the ladder in the North Yard in Denver, Colorado.

A wide-angle view of the Union Pacific's North Yard catches a variety of light power that are working the ladders and sorting cars.

A couple of UP rebuilt SD40-2's wait for their next assignment at Pocatello. UP 1954 was built in 1972 as the 3149 while the 2006 in 1976 as the 3320 and later the 8050.

UP 1826 (SD40N) pulls a cut of cars from the North Yard for sorting.