Factual error: Towards the end of the movie, just before he leaves the police headquarters, Danny Roman piles up a huge amount of office furniture as a barracade and ignites it with a grenade of some kind. The smoke detectors/sprinklers above the naked flames don't trigger for about three minutes.
Factual error: When Sabien views Niebaum's chair, you can see the bullet holes through the chair and into the desk behind it. The SWAT members were using 9mm MP5s, and they would use hollow point ammunition. Hollowpoints bloom when entering the body and do not pass through. Even if they used full metal jacket rounds, 9mm still wouldn't pass through a 250 lb man, a chair, and into a metal desk.
Add timeIan Hunt
Factual error: An ambulance would NEVER be parked directly in front of a hostage scene, as shown at the end of the movie, because (a) the ambulance would have to arrived before the police, (b) that location puts both the medics and the ambulance itself in jeopardy if shots are fired, and (c) the ambulance would be blocked in by the numerous police vehicles and thus unable to quickly leave with a wounded patient.