It's about 6:50 am on this muggy summer day and the first GO commuter train of the day is slightly behind schedule, filled with sleepy passengers. Yet another *smog* warning is in place as is evident in the distance. Meanwhile, an international freight heading west, which just set out from the intermodal terminal a short while ago starts to fully accelerate in preparation for the now clear single track just behind the commuter. The local is also doing his rounds and has just stopped to chat with the maintenance crew while sipping on his hot coffee.