As a Brit, all this setting makes me wish for is for Jack to have a brush with Harry Pearce from Spooks. Shame they really bloodbathed everybody in that show before it finished.
(Spooks is MI5 in the US - it's basically British 24, but without the real time element and with a 'threat of the week' structure rather than one big ongoing threat across a season. It's really very good, and highly recommended watching for 24 fans. It's on Netflix. Worth doing, 24 fans.)