Jack tries to find out more things to stop the terrorist attack in this very good episode wich shows us that the series is improving and getting more and more interesting episode after episode.
Althought it has the usual lack of perfection and the same on the charisma of some characters, thought characters like Cole, Dana and Hastings who were too weak in previous hours are improving a little, the episode manages to give us suspense, tension, action and drama.
Also i remark the performance of Kiefer Sutherland in this episode. He is truly great in the end.
You have to look closely the dialogue between he and Marcos.