UP 1817 (SD40N) sits in the Union Pacific's North Yard in Denver, Colorado.
UP 1817 (SD40N) and other light power sit in an echelon right formation in 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.
Light power dominates the Union Pacific North Yard in Denver, Colorado.
UP 1817 (SD40N) heads deeper into the North Yard in Denver, Colorado to sort train cars.
UP 1817 (SD40N) gets repositioned in the North Yard in Denver, Colorado.
A snowstorm catches UP 1817 (SD40N) and mates waiting in the UP's North Yard.
Light snow is falling in the Union Pacific's North Yard as UP 1817 (SD40-2) drops off a cut of oil cans for the fuel island.
UP 1817 (SD40N) brings a train into the North Yard in Denver, Colorado.
A quartet of light power, including UP 1817 (SD40N) wait in the Union Pacific's North Yard in Denver, Colorado for their turn at sorting freight.
The Union Pacific utilized quite a few rebuilt SD40N's (former SD40-2's) to shuffle freight cars in the North Yard in Denver, Colorado.
UP 1817 (SD40N) heads into the North Yard to work sorting cars in the large Denver facility.
A number of Union Pacific SD40N (former SD40-2's) are currently working in the North Yard sorting freight cars throughout the day.
