Continuity mistake: When Commandant Lassard and Sgt. Fackler enter the bar, Lassard plays pool with one of the customers. Lassard pockets the 9-ball two times between the shots, even though it is the same ongoing game.
Revealing mistake: When Fackler is directing traffic due to the blackout, many moths start circling the lights he holding. Many of these moths are actually attached to strings.
Continuity mistake: Does the poisonous gas seem to clear out of the room where Sargent Lasard is trapped in too quickly or what? They were only outside for a couple of seconds and then when they enter the room its as clear as can be, as if nothing had happened.
Revealing mistake: When commandant Lassard and Spacler walk into the bar all the guys in there throw their weapons behind the counter, but if you look at the weapons they're all plastic props.
Other mistake: When the mastermind is first shown behind his screen, he inflicts spittle onto one of his gang members by saying "plan is preceding perfectly." However, the mastermind is talking from behind a screen, and thus it would be impossible to get them.
Continuity mistake: When Harris is hanging off the side of the window washing rig and grabs Proctor's hand, Proctor is straddling the railing and reaching over with one hand and the other hand is holding onto the railing. But as Harris grip starts to slip, there's a shot of Proctor where's he's not straddling the railing, he's leaning over it with both arms grabbing Harris. In the next shot he's back to straddling the railing.