The inaugural run of the SU-99 in 2019 consisted of a mixed consist of NYSW, CSX, & NS power. (Due to the derailment in Summer 2018 putting most of the NYSW road power out of service) When I got word that the train was going to go on duty and hour early I made my way down to Ridgefield Park and then Bogota to see them build the train. They ended leaving at dusk due to a decent amount of work being needed prior to departure so a one and done at the Hackensack River Bridge of the SU-99 passing the USS Ling was the days main shot..
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.