Goofs

Right before the major drives through the wall on the roof you can see it is a standard brick wall but in the next scene you can see it is now just bricks stacked up on either wood or wood that is colored to look like concrete. In fact there is nothing on the sides of the bricks like there would be if it was real concrete and there is only things on the top and bottom of the bricks.

During the president's speech early on the film Roy Scheider makes a grammatical error. Instead of saying that the soldiers 'selflessly' fought, he impact states that they "selfishly" fought.

During the scene where they are driving on the roofs of buildings right before the major drives through a wall you can see the camera showdw on the wall.