CN 309 with a pair of ET44AC's (CN 3004 & CN 3034) bypasses a crew change at Turcot West as it heads towards Taschereau Yard where it will set off the headend TankTrain cars (usually CN 309 bypasses the yard).
Tier IV locomotives are the safest, cleanest, and most fuel efficient locomotives on the rails today. Unfortunately, most of them are ugly and are as quiet as an ACS-64.