Southern Pacific SD45T-2 9177 leads Milwaukee Road SD40-2s 156, 174 and 168 through Sullivan's Curve area on Cajon Pass. We spent the day chasing this power consist, which started out at the old Taylor Yard in Los Angeles with a manifest train for West Colton. The power was taken off that train in West Colton and placed on the train you see here for the trip up Cajon Pass and over Tehachapi.
The EMD SD (special duty) series are a strong and reliable kind of locomotive which still serve America's rails today. They have proved themselves by clocking in several million miles of freight service.