Knife designer Joe Caswell designed this Provoke First Responder knife, designed for EMTs working in close quarters.Caswell has extended his mastery of mechanisms to a new product in the line, the Provoke X: This is a folding axe, and it works like this:I'd thought it would be aimed at bushcraftershatchets are a cumbersome thing to carry, and this design obviates the need for a blade guard, which can get lostbut I was wrong. Perhaps as a sign of the times, this is being billed as a "tactical axe," a "powerful, portable, self-defense tool."The Provoke X generated strong buzz at last week's annual SHOT Show (Shooting, Hunting, and Outdoor Trade Show). Caswell is putting the $350 tool/weapon into production through his company, CRKT, and expects to ship in April.