Operation: FAR STORM

Operation: FAR STORM was a UNSC-Swords of Sanghelios joint operation to Installation 00.

Prelude
At the climax of the Human-Covenant War, the joint United Nations Space Command–Sangheili Fleet of Retribution and a Covenant fleet under the High Prophet of Truth's command traveled to Installation 00 through the slipspace portal at Voi, Kenya on Earth. The ensuring battle led to the dissolution of the Covenant Empire, the destruction of Installation 04's replacement, and heavy damage to Installation 00 itself.

In 2555, renowned human scientist and historian Doctor Luther Mann discovered the location of Installation 07 by cross-referencing Forerunner architecture on the shield world of Trevelyan. The Office of Naval Intelligence subsequently sent a research detachment of approximately three hundred scientists of multiple fields, including Mann and Henry Lamb, to study Zeta Halo along with hundreds of automated probes to scan and map out the installation. While inspecting the ring's custodial systems, Mann and Lamb discovered a Forerunner timer that they concluded was counting down to the Halo Array's activation in five weeks.

List of appearances

 * Halo: Hunters in the Dark
 * Halo 5: Guardians