The scenes at the mayor's mansion were filmed at the Bloomfield estate in Villanova, Pennsylvania. On April 4th (less than one month before the film's release), the garage burst into flames, starting what would eventually become a four alarm fire that destroyed most of the third floor of the main house.
Inconsistent lighting from shot to shot during the meeting between Captain Wolf and Chang. When the camera is facing Chang, he's shown to be backlit by the sun. In the reverse angles, with the camera on Wolf, Chang is, like Wolf, standing out of direct sunlight.
Luke Wright: First I'm going to take your trophy wife. Then I'm going to take your trophy children. Then I'll leave you with nothing. When I'm done, you won't even be a memory of a memory.