Revealing mistake: During the underwater scenes the light appears from below and above but it's underground and should be pitch black, suggesting studio lighting being used.
Revealing mistake: During the opening chase scene, there's a few shots where Nick and Chris are running towards camera from gunfire in a few alleyways before they fall through a door. There's two shots where you can see bullets impacting the walls all around them, but if you look in the background, there's nobody there actually firing at them until a few people run into frame at the end of one of the shots. The bullets impacting the walls around them are literally impossible from this angle. Furthermore, during this scene, you can tell from the angle at which the bullets are hitting the wall that there's at least a dozen different shots that should have hit and killed Nick and Chris, but they escape completely unscathed. The staging of the shots is very poor and makes no sense.
Revealing mistake: When the coffin is dragged onto the plane, you can see wheels that are set in the underneath of the coffin. It's supposed to be a flat bottom and a continuous scene from helicopter to plane, so no time to use a trolley.
