Conrail train PYSE (Potomac Yard – Selkirk) spent a lot of its journey under wires, travelling the Northeast Corridor from Washington to Philadelphia, and former Reading commuter lines from North Philadelphia to West Trenton. Typical power for the train was four 3000 horsepower six axle units, as seen here with an SD40 and three C30-7A’s rolling through Fairless Junction, Pennsylvania on the West Trenton Line.