Revealing: Right after the horse motorcycle chase scene, at the next day's debrief, there is a piece of file footage showing the lead terrorist. As per normal practice, there are numbers running in the clip to show where they are in it, however, even when they pause, the numbers continue to run. Most visible when Trilby asks why he's called the 'sand spider'; they pause the tape and yet the play numbers continue to run.

Continuity: After the shootout in the restroom, close to a hundred rounds were fired, all from LOUD guns, yet when Arnold and the terrorist are running through the mall and out the window, people are standing around in the stores, like they never heard a thing. Heck, that AK-47 would even be heard by the people outside on the street. The only one to hear anything is the guy on the toilet.

Audio problem: In the scene where Dana's about to fall off the crane, you hear an audio of her screaming "Help me. Help me." But if you look at her face, she's not saying anything.

Revealing: In the scene at the beginning of the film where Faisal is in the van and decrypting the files, he says "Yeah, I got your password," and then the camera swings down to show his fingers on the keyboard, pressing repeatedly on the same set of keys and looking rather unrealistic.

Continuity: At the part where Arnold and gang are raiding Simon's caravan and one of them hits Helen on the head with his gun, Arnie punches him on his left cheek, however when he gets up he is holding his right cheek.

Factual error: Further to the comment about the loudness of the Harrier, Schwarzenegger flies one without ear protection of any kind. I was fifty metres from one at the Farnborough Air-show, and I can tell you that after landing he (and his daughter) would be both stone deaf. Yes, they are THAT loud.

Continuity: When Harry picks the handcuffs right after he receives the truth injection, he still has the handcuffs hanging off his hand. After he kills the guard with the hook, he grabs Helen and says "let's go". He doesn't have time to take the handcuffs off his hand but they are gone.

Continuity: When Simon takes Harry for a ride in his car, he drives with his left hand on the wheel and his right arm down near his side. But in one shot he pats Harry on the shoulder, and suddenly his arm is up on the back of the seat.

Revealing: When Arnold is riding his horse through the hotel fountain, you can see that the scene had been rehearsed shortly before by evidence of water splashed on the concrete support pillars before the horse ever runs by them.

Revealing: In the scene where the harrier shoots a missile and blows up the bridge you can clearly see that it's all miniature, but if you didn't know, you could tell it by the crash barrier that is obviously made of some sort of rubber - it bounces up and down during the explosion (you see it in the frame where the car crashes down on the bridge again).

Factual error: Harriers cannot fire missiles from hover; they can only use their guns.

Revealing: More rounds come out of the Vulcan than are carried by real Harriers.