The local shuffles cars at Rowlesburg, WV. The engineer stated that they generally worked 4-5 days a week. Although the local typically used GP units, it had been assigned SD units since February since those engines could be used on into Cumberland. However, they were limited to 10 mph with the SD units.
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.