A pair of SD70ACes, UP 8504 & 8909, power an eastbound manifest with another ACe on the rear.

UP 8504 leads a manifest freight through San Timoteo Canyon east of Ordway. Note the yellow stripe on the plow of the 8504.

UP 8504 is the DPU on a westbound stack train.

The Des Moines to Gateway manifest is just coming off the bridge over the Mackinaw River at MP 96.75.

Union Pacific SD90MAC-H 8504 heads east with two other SD90MAC-Hs, and an EMD test car, at Highgrove, in Grand Terrace, California, on April 4, 1998. UP 8504 is the former Railroad: Union Pacific
Locomotive: EMD SD90MAC
Location: Grand Terrace, California, USA
Locomotive #: UP 8504
Train ID: I-GSAP-02
Photo Date: April 04, 1998