Threshold

The Gateways were the enormous superstructures constructed by the Scrin at 19 Tiberium-rich locations across the Earth. All but one of these towers has been destroyed by GDI. While the exact purpose of these towers is still not entirely known, it is suspected that they were either some form of superweapon or, as their given moniker suggests, 'gateways' to allow a more conclusive Scrin invasion of Earth to take place.

With the Relay Node destroyed, it seems unlikely that the Scrin will use the remaining tower, located in Italy, for anything at all, at least in the near future. The final tower was protected with extreme ferocity by one of Nod's highest-ranking commanders, believed to be Kane's second in command. This commander destroyed all GDI presence in the region. As such, the tower now stands impervious to human attack.

Kane's last movements before his latest disappearance were linked with the location of this last tower.