In the scene where the convoy is driving through the entrance of the tunnel you can see the black helicopter the film crew uses right behind the police helicopter. See more...
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The entry you are changing the wording of is:
|Title||The Dark Knight|
|Original entry||This was the first film since The Lord of the Rings: The Return of the King to remain #1 at the American box office for four consecutive weeks. It was finally knocked out of the top spot by Ben Stiller's Tropic Thunder.|