Editing Line Installation 1-4

'''Line Installation 1-4''' is a [[Forerunner]] [[Line installation]] located on an [[unidentified moon (Sub-sector 35)|unidentified moon]] in [[Sub-sector 35]].{{Ref/Reuse|issue1}}<ref name="issue2">'''Halo: Blood Line''', ''[[Halo: Blood Line Issue 2|Issue 2]]''</ref>

One of millions of similar facilities comprising the [[Maginot Line]], Line Installation 1-4 was constructed by the Forerunners as an outpost used to prevent unsanctioned ships from entering the core systems of their [[ecumene]]. The Line installations were most notably employed during the later stages of the [[Forerunner-Flood war]], when they acted as the final line of defense for the Forerunners.<ref name="sil104">'''Halo: Silentium''', ''pages 104-105''</ref>

Line Installation 1-4 possessed a powerful [[Directed energy weapon|energy weapon]] capable of shooting down any ships passing nearby in [[Slipstream space|slipspace]], causing them to crash down on the moon.<ref name="issue1">'''[[Halo: Blood Line]]''', ''[[Halo: Blood Line Issue 1|Issue 1]]''</ref> The installation also served as a [[Flood research facility|Flood research center]], with extensive facilities and native AI protocols designed with this function in mind. The Installation had its own [[Monitor]], named [[686 Ebullient Prism]], which had a sizable force of [[Sentinel]] and special [[Gatherer]] units under its command. The Installation itself is a vast underground complex with tunnels and hallways reaching kilometers deep, including a number of open, bottomless shafts characteristic of Forerunner architecture. Similar to a number of other Forerunner facilities, portions of the installation appear to have been designed exclusively for Sentinels, as vertical or angled service tunnels are more frequent than walkways.<ref name="issue3">'''Halo: Blood Line''', ''[[Halo: Blood Line Issue 3|Issue 3]]''</ref>

Due to the Installation's active defense system, the moon's surface became littered with wreckages of ships over the course of history. During the [[Human-Covenant War]] in the mid-2500s, the [[ONI]] vessel ''[[Long Time Coming]]'', as well as the [[Covenant assault carrier]] ''[[Clarity of Faith]]'' were shot down by the Line's defenses while in Slipspace.{{Ref/Reuse|issue1}} They both crash-landed on the moon and some of their personnel were taken by [[Gatherer]]s into the main facility of the Installation, for study by 686 Ebullient Prism.{{Ref/Reuse|issue2}} In [[Battle of Line Installation 1-4|the ensuing conflict]], the installation's control center was located and used by [[Team Black]] to shoot down an entire [[Covenant fleet]] in slipspace.<ref>'''Halo: Blood Line''', ''[[Halo: Blood Line Issue 5|Issue 5]]''</ref>