Line installation

A line installation is a Forerunner installation with the purpose of containing the Flood.

Background
Line installations serve as Flood research facilities, and are designed to target and destroy any Flood-infested ships passing within close range of the installation in Slipspace. These installations are usually located on a satellite of a nearby planet. Each installation has its own Monitor and a control center, as well as a sizable force of Sentinels and Gatherers.

History
At some point during the Human-Covenant War in the late 2552, the Long Time Coming, as well as the Covenant assault carrier Clarity of Faith were shot down by Line Installation 1-4's defenses while in Slipspace. As a result, they both crash-landed on an unidentified moon in Sub-sector 35. Personnel were taken by Gatherers into the main facility of the Installation, for study by the installation's Monitor, 686 Ebullient Prism. During the Battle of Line Installation 1-4, the installation's control center was located and used to shoot down an entire Covenant fleet in Slipspace.

Known Line Installations

 * Line Installation 1-4
 * Unidentified line installation

List of appearances

 * Halo: Blood Line
 * Halo 4