There's something scarier than a grenade-toting drone

Any ammunition storage location, full of explosives collected in one place, makes a tempting target. For an attacker, the hard part is getting an explosive inside the perimeter to set it off. Drones are the ideal mechanism for this mayhem. Relatively cheap and expendable, a drone's major limitation is how much weight it can carry. In this case, the aerial vehicle seems to have transported a Russian-made ZMG-1 thermite grenade.