A 2010 American action thriller movie. UNSTOPABBLE, written by Mark Bomback and directed by Tony Scott. The movie stars : DENZEL WASHINGTON and CHRIS PINE. The Plot of the story: In a rail yard within the northern Pennsylvania town of Fuller, a pair of hostlers working for the Allegheny and West Virginia Railroad (AWVR) are ordered to move a freight train off its current track to make way for an excursion train carrying schoolchildren. One of the hostlers, Dewey , chooses not to connect the locomotive's air hose to save time; he does this knowing that the train's air brakes will only apply on the lead locomotive in this configuration, but decides to connect the hoses after parking the train on another track. Dewey sets the locomotive's throttle at 100% in order to enable the train's dynamic brakes, but sees that an approaching switch is not set to the right track. Dewey jumps down to line the switch properly, while the levers in the cab, unattended, fall of their own accord. The train picks up speed, and Dewey is unsuccessful in his attempts to reboard. It leaves the yard and enters the main line unmanned.