I am in the cab of Milwaukee Road SD40-2 MILW 187, looking out at the various power in the diesel service area at the UP North Platte yard. It was quite an experience for my wife and I to get a VIP tour of the diesel service shops and yard, and we saw all sorts of motive power as well as pool power from many different railroads.
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.