Character mistake: When we see the first news footage of the White House, the headline is captioned "Terrorist Attack The White House." It should read "Terrorist Attack On The White House" or "Terrorists Attack The White House". (00:36:40)
Factual error: In the operations room from which the acting president (Morgan Freeman) is directing the crisis there are multiple uniformed military members at the table and seated on chairs behind the acting president. Over Morgan Freeman's left shoulder is seated a man wearing the uniform of an Air Force Senior Enlisted member (can't quite make out of the entire rank, probably a Chief Master Sergeant). The person portraying the Chief is way too old for the rank. On the other hand, a three-star Air Force General is depicted at the conference table and the actor is way too young to have three stars.
Factual error: When Banning is first identified as the agent in the White House, Secret Service Director Lynn Jacob's says he's "ex-Special Forces, Ranger Batallion." Anyone who has ever been in the US Army knows that the Ranger Batallions are not Special Forces units. First, there isn't "a" ranger battalion, there are three, and they are part of the 75th Ranger Regiment, designated by a tan beret (formerly a black beret) which is part of the US Army's Infantry branch, represented by crossed rifles. On the other hand, Special Forces is an entirely different branch unto itself, which is represented by crossed arrows, and Special Forces soldiers wear green berets. (00:48:32)
Answer: Forbes slipped up by mentioning the head bad guy's name. And, as good an agent as Forbes was, it is highly doubtful, not to mention suspicious, that he'd still be roaming around by himself this long after the fall of the White House. Plus Mike ain't stupid and most likely smelled a rat. And he was correct. Forbes was dirty.
Alan Keddie