Luna counted it down until the train was ten seconds from the bridge, then pressed the plunger down, igniting the bridge with a fiery inferno that destroyed it utterly, collapsing it into the river with a boom that threatened to deafen all there. It also left the train with nowhere to go, apart from down into the river as it sailed off the tracks, having not had the time to even put the brakes on, let alone actually slow down.