Turntable was a massive geothermal power plant developed by the Usean Rebel Forces. It was located in the center of Rocky Island and provided power to the Usean Rebel Forces's defenses around Saint Ark.
On August 16, 1998, the Usean Allied Forces launched an operation to destroy the Turntable's core and cut off power to the rebels' defenses in Saint Ark. The Allies dispatched Scarface Squadron and a landing ship, the Petral Coost, to Rocky Island to execute the tactical strike. Once Petral Coost reached Turntable's front entrance, a landing team was deployed to open the gate and allow Phoenix to fly inside and destroy the core. After this was done, the Turntable was rendered useless, and the defenses protecting Saint Ark were deactivated.