While it is interesting to point out the technological errors and exaggerated capabilities in 24, there are more obvious fantasy elements:
Jack Bauer is rarely wrong. Even when he is dropped in the middle of a situation, he has a better grasp that all around him.
Even though Jack is proven right time and time again, superiors and the oval office don't believe him.
Jack Bauer saves people who are at the hair's width of losing their lives.
That doesn't stop these same people immediately getting in a hissy fit with Jack because of the edgy things he does to save the nation-some gratitude!
Yes, these are devices to move the story along. But one message comes through: the fight to protect freedom is costly.
Michael Wm. Dooley