Under threatening skies, UP 8669 (SD70ACe) repositions at the Union Pacific's North Yard in Denver, Colorado.

UP 8669 (SD70ACe) moves a cut of heavies into the North Yard in Denver, Colorado.

3 UP Flag units led by UP 8669 lead a southbound merchandise train at Castle Rock, CO, on Colorado's Joint Line. June 10, 2019.

With three GE units in tow, UP 8669 negotiates a sag just east of Victoria, Kansas on the UP Kansas Pacific Line.