Here is a wide-angle view of the motors in the Union Pacific North Yard. On the right UP 1865 (SD40N) works sorting cars in the yard while the engines on the left either wait for service or assig... (more)

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

UP 1826 (SD40N) muscles a cut of cars back into the North Yard in Denver, Colorado.

UP 1826 (SD40N) joins other motors waiting for service or assignment in the Denver North Yard.

The Union Pacific utilizes a number of rebuilt SD40-2 units (designated SD40N) in the North Yard in Denver, Colorado.

Snappy SD40N 1793 (rebuilt at Jenks Shop in NLR from an SD40-2 delivered to UP in May 1973) and a couple leased geeps are refueled.

UP 1826 (SD40N) heads into the Union Pacific North Yard to shuffle freight cars.

A snowstorm catches UP 1817 (SD40N) and mates waiting in the UP's North Yard.

UP 1817 (SD40N) brings a train into the North Yard in Denver, Colorado.

UP 1997 is one of many SD40N units currently found working the large North Yard in Denver, Colorado.

The bright sun and the snow really makes the Amour Yellow pop on the motors in the Union Pacific's North Yard.

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.

A group of light power sits in the Union Pacific's North Yard waiting for assignments.

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 1640 SD40N sorts oil cans in the North Yard as a pair of BNSF motors arrange a stack track in the adjacent intermodal facility.