Installation 05: Difference between revisions

{{disambig header|the Halo Array|the campaign level|Delta Halo (level)}}

'''Installation 05''', also known as '''Delta Halo'''<ref name="deltahalo">'''[[Halo 2]]''', campaign level ''[[Delta Halo (level)|Delta Halo]]''</ref>, is one of the massive [[Halo Array|Halo fortress worlds]] built by the [[Forerunner]]s. The ring, monitored by [[2401 Penitent Tangent]], orbits a gas giant known as [[Substance]] in the [[Coelest system]]. Installation 05 was the second Halo discovered by [[Human|humanity]] and the [[Covenant]] and became a battleground near the end of the [[Human-Covenant War]]; more importantly, it was at Installation 05 that the [[Great Schism]], the civil war that sundered the Covenant, began. The installation was ultimately [[Glassing|glassed]] in order to prevent [[the Flood]] from escaping in the wake of the [[Battle of Installation 05]].<ref name="GoO glassed"/><ref name="ENC glassed"/>

The purpose of Installation 05, along with its brethren, was to preclude and thwart the parasite forms known as [[the Flood]] from consuming all sentient life in the galaxy. In the event of a Flood outbreak, one of the seven installations could be triggered to annihilate all sentient life within 25,000 light years. Once one ring is set off all remaining rings would activate. All seven rings could be fired at once if need be.