Kicking up the snow at Mile 3 of the Iroquois Falls Subdivision, MJ and Clayton run SD40-2 1733 'engine only' from Porquis to a derailment site at Iroquois Falls on a cold and stormy December 27th. You'll notice that a 1700 series SD40-2 only has one headlight on the tail end. The light directly below it is a red marker light.