Caption: The colours at Cedar Curve on the York-Durham Heritage Railway are changing as a pair of ALCO/MLW units shatter the silence of a quiet Thanksgiving Sunday. With an extra-long consist to accommodate the extra passengers enjoying the fall colours, YDHR 22 and 3612 were both put into service pushing the train towards Stouffville. This operation was very resource-intensive, needing three running crews. The first crew is up in the cab car, the second in 3612 and the third in 22. This was old-school MUing, with radio instructions relayed between the two locomotives as the crews manually notched up and down in tandem.