Zack Sharf Digital News Director Riding a motorcycle off a cliff and learning the dangerous sport of speed-flying weren’t the only requirements for acting in “Mission: Impossible – Dead Reckoning Part One.” Tom Cruise also had to fight co-star Esai Morales on the roof of a train moving at 60 miles per hour. The latest “Dead Reckoning” behind-the-scenes featurette confirms that Cruise and Morales, the latter of whom plays the film’s villain, shot the fight scene practically, meaning they were literally strapped to the top of a train as it sped through a valley in Norway. “When we started talking about this movie in the terms of a sense of adventure, an action sequence on a train is something we always wanted to do,” writer-director Christopher McQuarrie said. “We wanted to build upon the previous films and apply that knowledge to something practical and real and bring this train sequence to another level.”