Corrected entry: During the scene, near the end of the film where Hale is in the helicopter, shooting at Deakin on the train; we see Hale aiming directly at Deakin, inside the train, with Terry hanging on to the outside of the train. The problem is that if you are shooting at a moving target then you MUST lead the target, that is to say, shoot in front of it, to ensure that the rounds you are firing will strike the target. Hale is an experienced military operator and would know to lead his targets. Unfortunately, he was aiming just about the right distance in front of Terry for him to hit her, and the volume of fire he poured at the train would have been more than enough to seriously injure, if not kill the poor girl.
Corrected entry: In the scene where Hale and Deacon are flying the "B-3," Slater's character says something to the effect of "initiating stealth mode." He then flips a cockpit panel switch and the audience is led to believe that the plane is now invisible. In actuality there is no "stealth mode" switch in a stealth fighter or bomber. Their "stealth" comes from design materials (read: radar absorbing materials),structure design (no 90 degree angles), and from their onboard electronics package which enables them to locate radar sites, their field of view and fly around them.
Corrected entry: When Slater steals the Humvee with the nuke in it, Howie Long starts shooting at him. He is chastised by Travolta, something like: "Would you please not shoot at the NUCLEAR weapon"? However, we were informed earlier, after the Stealth bomber crashes, not to worry since these weapons can sit in "burning jet fuel for five hours" and be fine. Well, which is it? Are they stable or not?
Corrected entry: At the end of the film, there is a gunfight on the top of the train. In this the antenna - which is set up to receive the signal from the remote controller - is damaged. A few scenes later, Slater uses the cable, which goes from the antenna to the bomb, to swing in the train, so there is no connection between the antenna and the bomb. But after the fight between Slater and Travolta, Slater jumps out of the train with the remote controller in his hands and disarms the bomb. So how came the signal to the bomb?
Corrected entry: When Slater and the girl is in the canyon fighting the chopper, he borrows the girl's gun, but later, in the mine, he has his own sidearm. Why did he not use this to fight the chopper?
Corrected entry: Near the end of the film, Hale and Teri are on top of the train engaged in a gun fight with one of the bad guys. At one point the bad guy has the good guys right where he wants them, his gun pointed at them and ready to take them out. But instead of simply firing away at them - as he had just done seconds before - he yells at them to "freeze". This then conveniently allows Hale to do the "fall-down-and-grab-the-gun-out-of-Teri's-pants" trick and shoot the bad guy. The decision by the bad guy to suddenly act like a police officer by having them "freeze" makes absolutely no sense. It can't be characterized as a character mistake since he had just been shooting to kill seconds earlier. It was only done to give the good guys an "out" in this situation.