Series started on a good note with gripping screenplay and some good acting despite few hiccups and drags. Slowly it became routine from season 4. Traitor-Immunity deal from president-no time-Jack the savior. People will be moving around in CTU except few characters who actually work. No FBI no NSA no CIA no local police. Any issue- CTU CTU.. setup a perimeter. What for? These guys always loose agents all the time at perimeters letting the traitors escape. None shots Bauer even they have tons of chances. Someone can enter into their building and release gas right under their nose. It should be wrapped up in 10-12 episodes per season. Routine stuff