DDI Base is a submersible facility operated by the private military corporation DDI. It features three pylons, three radar domes and a landing pad. It also has aircraft launch facilities, command and control functions and can jam enemy radar. During the covert war with H.A.W.X. squadron, Sonnet was held at the base. She was rescued by her teammates after Rainmaker sprung his trap and Arrow stayed behind to destroy the base. He was joined by Major Zeal and stole a modified F-22 Raptor. They strafed the pylons and successfully destroyed the base.
- Tom Clancy's H.A.W.X. 2 (Wii version)