"It activates with a trigger in the guard, and runs on diesel fuel canisters I have on my belt. They're reinforced with ship-grade steel, so no worries about them being targeted. With about 5 canisters it runs for, oh say... 15 minutes tops with the trigger held constantly? The beauty of it is that you don't have to constantly run it, just pull the trigger when you'll be making a swing. On top of that, even without fuel, it will screw people up."