So the numbskulls didn't set handbrakes before leaving the train? I see jail time in someone's future.

"'If the operating locomotive is shut down, there's nothing left to keep the brakes charged up, and the brake pressure will drop finally to the point where they can't be held in place any longer,' Ed Burkhardt told the Toronto Star.

Canadian crash investigators said they will look at two sets of brakes on the train, the air brakes and the hand brakes, as they probe what could turn into Canada's deadliest rail accident since 1956."