How's your reaction time? Zombies may move slowly. But they are deliberate, and if they ever group together than no barbed barricade, concrete wall, or steel door will keep them out. That's when you call in the military grade hardware. Run over the slow-moving walkers with a satisfying crunch within a tank. Catch the brainless zombies between a devastating crossfire between high towers. Bury the zombies a second time under an endless hail of incendiary bombs. Or dump vats of bubbling acid on their already decaying flesh and watch them melt away into nothingness. Dish out your orders to the survivors and set your sniper scope on reducing the number of zombie heads in the undead apocalypse.