Other mistake: At the end of the first movie Rybak is a Chief (E7), and he is a retired Lieutenant (O3) during this movie. Assuming he got commissioned to Ensign (O1) immediately after the events of Under Siege, it would take a minimum of 42 months to be promoted to Lieutenant. This movie takes place within 4 years of the first movie, because Admiral Bates is still the Chairman of the Joint Chiefs of Staff. The picture of Rybak in his Lieutenant uniform is at least 5 years old according to his niece. None of these timelines make sense for the rank he is in the movie.
Plot hole: Dane says as long as the train is moving the signal to Grazer-1 is completely transparent. So shouldn't ATAC have been able to find Grazer-1 during the ten or so minutes the train was stopped while the bad guys were looking for the CD?
Continuity mistake: Admiral Bates has different ribbons from the first movie to this one. Not only does he have at least five additional ribbons (which is possible), but certain awards have disappeared altogether.
Factual error: Several of the Navy Officers seen throughout the movie, including Admiral Bates have some of their ribbons in the wrong order, to include the marksmanship ribbon and Kosovo.
Revealing mistake: When Bobby opens the door to grab the CD from the computer look at his right hand, he already has the CD before he's taken it out of the computer.
Audio problem: When the mercenaries begin to take over the train one of them grabs an older woman and the small child with her. The bad guy threatens to "shut that bitch up or I will", but what he says doesn't match his mouth.
Plot hole: At the end of the movie once Ryback and the others take over the helicopter, Ryback calls in to ATAC to let them know the hostages were OK. How did he manage to do this? He didn't know where Admiral Bates and his people would be, only that he was able to send his fax message to his cafe, which still had no idea if his message got to Bates at all. It also begs the question how Ryback could turn a dial on a radio and magically call in to a top secret military facility that he didn't even know about.
Revealing mistake: Before Trillings and Gilder enter their passcode for the first time at ATAC there's a screen showing the codes already entered and the transfer completed before they've typed anything.
Continuity mistake: When Captain Trilling enters the room where Captain Gilder is waiting for him, she says "Have some champagne, Captain Trilling." When she says this, she has the wine glass in her right hand. A split second later, as Captain Trilling gets close to her, she has changed the glass to her left hand. There was not enough time for her to do that, especially lying on her side like she was.
Continuity mistake: When they decide to use the second Pegasus missile, the guy with the glasses says that they still have eight possibilities left. The Admiral tells him to pick one. He is about to pick Delta, then switches to Kappa. In a previous shot that shows the large screen with all of the remaining satellites, when the guy said that there were still eight left, the Kappa satellite is not there.
Other mistake: When Ryback enters the locomotive to search for a working radio (which he finds cut), he grabs one of the terrorists who wanders in, presses the gun to his neck, and shoots. As the guy falls away, you can see that he has no bullet hole in his neck. At such close range, all of the damage that it caused would be unmissable.
Continuity mistake: The 2 captains are thrown out of the train into the river under the bridge. Later on, when the shooting starts in the hostage's cars, they're back and one captain is shielding the other.
Plot hole: Dane's motivation for hijacking the satellite is supposedly because ATAC fired him. But he would have already had the satellite programmed to respond if he used it remotely like he does on the train except he wouldn't have known he'd be fired at the time, so he'd have no reason to have the satellite ready to hijack.
Suggested correction: Dane was a paranoid genius. There's no way that he didn't build in a back door that he could take over the system remotely.
