Flags on the Work Train. The eyes of upstate New York were transfixed this weekend on a pair of Canadian Pacific "Flag Unit" SD40-2/DRF-30t engines (5936/6028). Seen here on the afternoon of Sunday, March 17, 2019 crossing the Mohawk River into Cohoes, NY, it brought a train loaded with continuously welded rail from Canada and would tie down a the CP Colonie Yard in Watervliet.
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.