As part of the overhaul of Union Pacific AC4400CW-CTE No. 5687, the still good generator is removed from the old 4,400 hp 7FDL16 prime mover, which will be mated to its new engine. The work is bei... (more)

As the blue hour settles over Denver, Colorado, on December 7, 2015, Union Pacific GE AC4400CW-CTE No. 5687 sits inside the cavernous main hall of the former Rio Grande backshop at Burnham Shops. ... (more)

The massive overhead crane inside the Backshop at Union Pacific’s Burnham Shops in Denver, Colorado, easily lifts the old 4,400 hp 7FDL16 prime mover out of UP GE AC4400CW-CTE No. 5687 during an... (more)

Union Pacific GE AC4400CW-CTE No. 5687 is being overhauled in the backshop at the railroad’s Burnham Shops in Denver, Colorado, on December 7, 2015. The old 4,400 hp 7FDL16 prime mover is lower ... (more)

It’s twilight on December 7, 2015, as Union Pacific GE AC4400CW-CTE No. 5687 sits inside the cavernous main hall of the former Rio Grande backshop at Burnham Shops in Denver, Colorado.

Machinists in Union Pacific’s backshop at Burnham Shops prepare to remove a generator from the 4,400 hp 7FDL16 prime mover of UP GE AC4400CW-CTE No. 5687 during the locomotive’s overhaul on De... (more)

Union Pacific GE AC4400CW-CTE No. 5687 is inside the former Rio Grande backshop at Burnham Shops in Denver, Colorado, for an overhaul on the evening of December 7, 2015.

On Sept. 3, 2010, I drove more than 100 miles to catch a Union Pacific passenger special along the scenic Leamington Cutoff, only to find out later it departed Salt Lake City several hours early. ... (more)

This unit is shoving on the back of a coal train heading north on the Peoria sub on a single digit winter morning.

A northbound coal train ducks under the BNSF Mendota Sub just west of Buda.

Last train with good light runs track speed 2X1 DPU