Factual error: Near the end of the film Knox is flying a Huey helicopter and the Angels hitch a ride by shooting it with a spear gun and dangling on the line behind it. Suddenly adding about 200kgs to a Huey in flight like that is going to cause all sorts of problems with the trim and airspeed of the aircraft - the pilot would know immediately that something was wrong.
Factual error: In the opening scene with the terrorist on the aeroplane, the LL Cool J character opens the hatch to the cabin and jumps out with the mad bomber. Pretty amazing considering aircraft doors open inward, requiring about two tons of force to overcome the air pressure exerted from inside the cabin.
Continuity mistake: In the first pursuit of the Creepy Thin Man, at the party, the girls are running down the stairs while they change and begin to litter the stairwell with clothes. There's one wig dropped that's dark brown/black and straight. Though Lucy's hair at the party does appear shorter than her actual hair length, her hair is curled up at the ends, not straight like the dropped wig. So whose was it?
Plot hole: In the Redstar mainframe, we are told that the floor of the vault will trigger the alarm if it receives more than 0.25 seconds of contact (apparently even with the security checks). What would be the point of the bosses going through all of those security measures if they would just set the alarm off anyway? Surely once the girls have faked the fingerprint and retina scans, they don't then need to flip across the floor!
Continuity mistake: When Natalie is in the room preparing to enter the chamber to install the device on RedStar's system, she is wearing a white outfit from head to toe with a small oxygen mouthpiece for breathing. However, when the door opens to the room and she begins her gymnastic flips over to the system, the outfit no longer covers her hair and the oxygen mouthpiece is gone. There doesn't appear to be a hood attached to the outfit.
Continuity mistake: In the scene where the Angels are fighting on top of the tower, Lucy Liu and Crispin Glover do a spinning move. There is a close up on Lucy before she does the move and then in the next shot we see her and Crispin spinning out of the way. In the close up shot, we see her starting to spin to her right, but in the wide shot she's spinning to her left.
Visible crew/equipment: Right after the race car goes over the bridge the scene changes to the Angels' HQ & there is a close-up of the TV screen that they are watching. As the camera zooms out you can very clearly see the reflection in the TV of the cameraman backing away from the screen with his eye to camera.
Other mistake: At one stage the Angels speak with each other in a different language, so that the people sitting next to them wouldn't understand. Having listened to it for a few times, I realized it was Finnish. Funny though, the thing they actually said there (in Finnish), was totally different than the written translation.
Continuity mistake: When the girls figure out that Knox is after Charlie, and Dylan thinks of the picture and they zoom in onto "Townsend." The shot before the final shot of the photograph shows Knox's father's arm around Charlie, when in all the other shots, he has his arms above his head.