Great content for the upcoming drone wars and the inevitable tunnels that will be built for troop and matériel movements

What makes you think a tunnel would be safe? Just need to re-purpose this little guy:

	▲	itsthecourier 3 minutes ago \| parent [-]
		a network of tunnels and sensors is easier to defend than a open space exposed position where drones can see you from miles away, I guess that makes tunnels better for defense