Other mistake: The end credits list the cast in order of appearance, but the order of the cast list is completely inconsistent from how the characters first appeared in the movie. (02:36:45)
Other mistake: In the Watertown police shootout scene, a resident tosses a sledgehammer to the police to help them in the fight. Right when the resident throws the sledgehammer from their front door, many frames are entirely missing from the movie for some reason, which results in an awkward skip. This is seen in all cuts of the film (Blu-Ray, Digital, etc).
Other mistake: When the crew is isolating the boiler in the Pendelton, the pipe wrench on the isolating valve is on backwards for the direction it is being turned.