Installation 03

Installation 03, also known as Eta Halo, is one of the seven rings in the Halo Array. It was originally part of a smaller array of six Halos with a diameter of 10,000 kilometers, as opposed to the 12 larger, 30,000-kilometer-wide Halo installations. Its monitor is 03-049 Abject Testament. It appears to have a red and cracked surface, indicating the presence of vast deserts, as well as what appears to be volcanic activity, the latter of which exists through clearly artificial means. The Office of Naval Intelligence discovered the installation's location some time after the Human-Covenant War had ended. Subsequently, the top-secret research station Ivanoff was built in the Halo's orbit, presumably with 049 Abject Testament's permission. In March 2553, Catherine Halsey was indefinitely detained here by Admiral Margaret Parangosky, as retribution for lying to her about the creation and deployment of flash clones during the SPARTAN-II program's early phases. The MJOLNIR/Pioneer variant first saw field use during the initial ground exploration of Installation 03.