John retreated several kilometres away from the den, finding a suitable distance away from the den to lay down his defences. Then, he began the work. He started by laying down a thick layer of walls, followed by a layer of defensive towers. He repeated this process for a full hour without even taking a single moment of rest.
Once the skeleton of the fortress was set, he began to fill the battlements with his upgraded arsenal. He placed super cannons and big laser cannons in overlapping fields of fire, ensuring there wasn't a single square meter of the den that wasn't covered.
High above, he threw the big anti-air traps into the sky, watching as they ascended and locked into their hovering patrol patterns. Having worked for hours on these enhancements, he had thousands of these evolved units ready for deployment. Now was the time for the ultimate field test.
