Hour 19: The Ambush is a special feature found on the 24 Season 7 DVD which demonstrates how they filmed the massive explosion in episode 19 of the season.
It includes interviews with Rodney Charters, Stan Blackwell, Scott Blackwell, Richard Rosser, Gabriel Casseus, Michael Klick, Guy Skinner, Hal Lary, Jay Herron, and Jeff Cadiente.