It's a rainy fall day in the Pittsburgh area. The ditch lights on an eastbound light helper set highlight the damp roadbed as it passes the helpers on westbound 25Z in the tangent between Ardara and Larimer, Pa.
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.
