C-4

C4 is a type of plastic explosive. It is used by both CTU and terrorists. During Day 5, Jack Bauer used C4 to incinerate the Sentox nerve gas at the Wilshire Gas Plant. TAC Teams also use C4 in small amounts to breach through doors and walls. During Day 6, Phillip Bauer's men used C4 to ambush Jack Bauer and a TAC team.