After wresting away the dead-man's switch from the would-be bomber, who is then knocked down and handcuffed by one of Mathews's officers, Mathews asks the demolition expert who's just dismantled the shotgun-triggering device, to light his cigarette, and comments on the strong wind blowing through the canyon. The Demolition Expert complies, flicking open his lighter in that wind - eighteen inches from all that enhanced dynamite.