Caption: As Tim Allen would say, "more power!". On this very cold morning, the Racecourse job is switching with all four London-assigned units (CN 4112, 4729, 4761, 4130). On the 12 track lead in the background is CN 438 (4721-4700) who have just separated their train into two tracks (Sarnia and Toronto cars) and are heading to the west end of the yard to wait until their train is built. The next morning, these two engines would be involved in a minor fender-bender at the west end of the yard and later sent to Toronto for repairs.