Armour Yellow engines of the Union Pacific sit in the snow as they wait for service or assignments in the North Yard in Denver, Colorado.

UP 1381 (Ex Southern Pacific GP40-2) holds station in the North Yard in Denver, Colorado.

UP 1381 (Ex Southern Pacific GP40-2) sits in the North Yard waiting for an assignment.

UP 1381 (GP40-2) works the North Yard in Denver, Colorado.

UP 1381 sits in the Union Pacific's North Yard in Denver, Colorado. It is an ex-Southern Pacific GP40-2.

UP 1381 (ex-Southern Pacific GP40-2) works in the Union Pacific's North Yard in Denver, Colorado.

UP 1381 (ex SP GP40-2) works the North Yard in Denver, Colorado.

UP 1381 (an ex-Southern Pacific GP40-2) sits in the North Yard with other engines.

3 UP yard employees walk back to the operations building in the Union Pacific's North Yard.

UP 1381 (GP40-2) gets ready to take a short freight out of the Union Pacific's North Yard in Denver, Colorado.

Union Pacific 1381 is ready to have its cab painted as it goes through the rebuild program and will one day emerge as a member of the Locomotive Specialist roster. Photo taken with permission wear... (more)

Former Union Pacific 1381 waits for the day when it will go through the rebuild program and come out of the shop with a new coat of paint and markings under the Locomotive Specialist banner. Phot... (more)

The Norwalk Local enters the Patata Industrial Lead at Studebaker.

LOA38R takes a slight pause as the conductor lines the train off the Santa Ana Industrial Lead and onto the Patata Industrial Lead at South Studebaker. On the left is the Los Nietos Sub, which sti... (more)

SP Lives On...Kind of. With their day's work complete, UP's LOL30 ties up in Lompoc this afternoon and waits for the crew van to arrive. The following morning the crew will return to their ... (more)