Lynn McGill accesses the ventilation system in 24 Season 5 Episode 13

24: Lynn (Sean Astin) tries to access the ventilation system in CTU in the 24 episode “Day 5: “7:00 PM – 8:00 PM” airing Monday, March 13 (9:00-10:00 PM ET/PT) on FOX. ©2006 Fox Broadcasting Co. Cr: Kelsey McNeal/FOX