Visible crew/equipment: In one of the scenes where Nia Peeples is fighting with Ja Rule and Steven Seagal, she jumps down to a lower level corridor, and you can see the pad that she or the stunt woman lands on.
Factual error: A two minute free fall from a helicopter? Not unless the helicopter was flying at 230,000 feet, which is more than 5 times the record altitude achieved by one.
Deliberate mistake: Early in the movie someone fires an RPG, and, when he does, they show him comically being flung back through the air by some kind of supposed recoil effect. RPGs are rockets shooting out of tubes with the blast going backwards, so the holder of the tube themselves experiences no recoil.