 Shooting the scene consumed $5 million of the film's reported $150 million budget, which was likely the most expensive shoot in the city to date.The scene, which had to meet requirements from 14 government agencies, involved 250 crew members and 1,000 extras, including 160 National Guard members.Also present were several Humvees, three Strykers, a cutter, a utility boat, and two response boat small craft, as well as other vehicles including taxis, police cars, fire trucks, and ambulances.