Caption: Thanks to the OSR I quickly grew a big fascination to the MLW RS23 model. For a period of time they were regulars on the job to Guelph. Typically in the form of pairs or a trio. The sound was great either way. Here a trio of RS23’s also known as “rockets” by some, are seen working the Owen’s Corning spur with a lone covered hopper. The OSR truck placed itself nicely in the image as their waited to test the crossing signals.