With a chilly outflow from Whistler blowing through Paradise Valley out to Howe Sound, CN's daily southbound for the for the former BCR lines south of Prince George (aka the Cariboo Division) rolls down the main at Cheakamus after spending an hour negotiating the Cheakamus Canyon.
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.