Today when GE ES44DCs have taken over CN, while SD40-2s & SD50Fs are being retired in droves, its hard to believe that earlier this year CN was still leasing 50 Alstom SD40-3s, all ex-CN SD40s. Power policy sure changed quickly!
Back in 2004 I managed to catch three trio sets working the mainline & PNL. GCFX 6075-6051-6048 lead 453?, ex-CN SD40s 5169, 5195 & 5206 respectively. Plenty of duo sets powered this train as well.
I havent seen any trio sets since, mostly because CN began re-numbering/patching them into the WC 6900 series. This largely restricted the units to WC territory and made them non-leaders in Canada, hence I havent even seen a duo since.
Note the Lettelier sub lead in the foreground. CN pulled up the switch (forming a ~150ft spur in the process), making the branchline accessible through Fort Rouge yard only.