One of this movie's most iconic scenes was also, unsurprisingly, one of its most expensive. The logistics involved in shooting the Brooklyn Bridge evacuation scene were daunting enough, without even considering the filming itself. Permits upon permits were needed, as was a crew of 250, plus 1,000 extras, and 160 members of the National Guard.
The executive producer estimated the cost of the scene at around $5 million, although some online believe the number to be far greater. With all the army issued helicopters, boats, and crew needed to pull off the shot, it's no wonder people think that $5m number seems a bit shy of the real cost.