The three great generals of the North Continent were stationed separately at the three frontier defense lines: northwest, due north, and northeast.
Even with the Umbrella Line of Defense covering them, the giant walls of the fortresses still had to maintain year-round vigilance. In the vast Old World, besides the Source Material Storms, there was always the possibility of unknown Extraordinary Creatures appearing.
The fact that they hadn't appeared before…
Didn't mean they would never appear in the future.
So every major frontier city would be equipped with the highest-level warning systems. In the past, it was the Investigation Corps that was responsible for sending garrisoned personnel to patrol regularly, making sure there was nothing unusual outside the Umbrella Line.
Now that they had Deep Sea, the monitoring work could be handed over to artificial intelligence.
The North Continent had deployed a massive number of "Electronic Eyes" beyond its borders.
