Near the end of the movie as Susan and crew are entering the government building, the US flag is improperly hanging on the wall. Proper flag-flying etiquette states that the Union (the blue field with the stars) should always be flown in the upper left section, regardless of whether the bars are horizontal or vertical.
When Angie Harmon gets in the car at the baseball game, you can see the camera reflected in her window before Jamey Sheridan enters the shot.