Question about the ending
When the initial patrons got off of the Roller Coaster Ride - Revolution - they were getting interviewed by various Television Reporters. Harry hears and recognizes the Terrorist's voice as he is being interviewed. Its my understanding at this point in the movie, Harry still hasn't seen him and does not actually see him during the interview. Harry immediatelly confronts the reporter as to which direction the person(Terrorist) went after the interview.
Why doesn't Harry ask the reporter for a description of the terrorist, such as what he was wearing, clothing, height, weight, build, if he was wearing a jacket. There was so many people in the park, the direction he went was so minimal, without knowing who he was looking for.
Also, when they were at a previous park, and Harry was to provide the terrorist with a ransome, the FBI/CIA knew it was going down. Why didn't they put as many agents (200 or so) as they possibly could and spread them throughout the park, looking for anyone suspicious. It seemed as though the Undercover Agents were not really Undercover as they were wearing suits, and their only seemed to be a handfull of them.