This is an exciting episode. Unfortunately, Derek ran into the airport and is now the potential of target of a hostage shooting. Inside the President's inner circle is a man who we find early on is a traitor, a man connected to the terrorists. Jack works the ventilation system as he directs CTU to counter these guys. They are all wearing exploding vests which will be used to kill everyone if the President doesn't follow the demand to stop an agreement with the Russians. There, however, an unfortunate ending to this episode.