An unrepeatable lashup. CN 5516, IC 2457 and NS 2522 provide power on a CN 120 with a very interesting lashup. It would be impossible to repeat this lashup these days, since this photo was taken CN 5516 was retired and NS 2522 was converted to SD70ACC NS 1818. As well, CN 120 is now run with a DPU 99% of the time, so the chance of a cowl leading is negligible.