In the event everyone starts turning into zombies and eating each other's faces off (looking at you, Florida), this Tactical Tomahawk axe is the kinda tool you'd want to have.
But really, if you're doing some kind of excavation or rescue work, the SOG F01T Tactical Tomahawk ($US27) could be totally useful. The 40cm weapon's got a 7cm stainless steel blade, tough polymer handle and it only weighs 680g. Axes: not just for lumberjacks anymore. [Uncrate]