This movie is very graphic and not for the weak of heart, but very very well done. I got absorbed in it. The acting was superb! Michael Sheen has been my favorite actor for years, but this has to be his best work ever. Samuel L. Jackson was very convincing (As always) and the intensity of the movie as a result is just heart wrenching and exhausting. A very frightening look at terrorism. In my opinion, this film might have been a bit too well done. It just seemed REAL! Bravo to the actors and production crew on a job very well done. I will be haunted by this movie for a while.