UP 1652 (SD40N) waits for orders in the North Yard in downtown Denver, Colorado.
UP 1826 (SD40N) rousts the birds feeding on spilled grain in the Union Pacific's North Yard in Denver, Colorado.
A blanket of snow covers the Union Pacific's North Yard in Denver, Colorado.
The remote-control engineer pulls UP 1825 (SD40N) up to the switch in the North Yard in Denver, Colorado.
UP 1826 (SD40N) takes a turn at sorting cars in the Union Pacific's North Yard in Denver, Colorado.
Sunrise shines on the bricks of the operations building at the Union Pacific's North Yard in Denver, Colorado.
A crew member walks out to UP 1640 (SD40N) and will get the motor moving into the North Yard to sort freight cars.
A group of Union Pacific light power sits in the North Yard in Denver, Colorado.
UP 1825 (SD40N) works the North Yard in Denver, Colorado.
UP 1826 (SD40N) works the North Yard in Denver, Colorado.
Light power group together in the North Yard in Denver, Colorado.
UP 1957 (SD40N) works the Union Pacific's North Yard in Denver, Colorado.
UP YKS92R is eastbound towards CPKC Knoche with transfer traffic.
UP 1957 (SD40N) works the North Yard in Denver, Colorado.
Light and heavy power line up for serving in the Union Pacific's North Yard in Denver, Colorado.
