Unstoppable is a 2010 thriller based on a true story that stars Denzel Washington and Chris Pine as rail men who put their lives at risk to stop an unmanned speeding train from derailing and causing a mass casualty event. Unstoppable was the final feature directed by Tony Scott (whose life tragically ended when he jumped from a Los Angeles bridge in 2012) and was his fifth and final collaboration with Washington, who previously starred for the director in Crimson Tide, Man on Fire, Déjà Vu (2006), and The Taking of Pelham 123 (2009).
The following weapons were used in the film Unstoppable (2010):
M16A2 rifles are used by sheriff's deputies and state troopers in an attempt to slow the unmanned train by shooting the emergency fuel cutoff switch on the lead locomotive. An officer described them as "shotguns" to a reporter.