For a climactic finale, De Palma staged a chase from the platform of the Harlem-125th Street (Metro-North) Station to the escalators of Grand Central Terminal. For the shoot, trains were re-routed and timed so that Pacino and his pursuers could dart from car to hurtling car. The length of the escalator scene during the climactic shoot out at Grand Central Station caused a headache for editor Pankow. He had to piece together the sequences so that the audience would be so tied up in the action that they would not be thinking about how long the escalator was running.