One of the largely unseen aspects of the consolidation/separation of Ottawa and Montreal sections of trains to/from Toronto was the turning of the power that arrived from Ottawa on the CP branch from Smiths Falls. Cab units sometimes arrived in A-A sets, and those consists were just moved to the siding behind the station to wait for the returning counterpart. Single A-units and A-B consists were a different story, requiring a wye. The CP branch, after meeting the CN main line from the north, curved northwest behind the station, descended a slight grade, and then curved southwest, ducked under the CN main, and then reached a wye on the south side of the CN. Here a lone FPA4 emerges from the short tunnel under the CN as it rolls toward the wye.
