Heading east light for a lift. CN 149's light power (SD75I's CN 5732, CN 5742 & CN 5673) is heading east on CN's new right of way to lift cars set off by CN 121 the previous night.
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.