Before the advent of Santa Fe's Super Fleet GP60Ms, Santa Fe ran locos like these GP39s and SD40-2s on their hottest transcontinental trains. The EMDs reflect on their future in the presence of a GE C30-7 at the Richmond, CA turntable.
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 reliable by clocking in several million miles of freight service over several decades.