In the sweet light at 5:50PM one of the Selkirk Hump sets shoves yet another cut of cars over the hump as the air is filled with the slow and steady drone of the SD40-2 with squealing flanges from the retarders as background noise. The SD40-2 is the former CSX 8173, former L&N 1269. The slug 1008 is an MT6, former CR 1106.