NS C35 Throttles Up at Leets after C28 experienced engine trouble ahead. The engineer kept the train at a steady 1-2 miles an hour for a good 30 minutes or so and never brought the train to a stop.
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.