Editing Installation 08

{{Status|Canon}}
{{Disambig header|the replacement megastructure|other uses|Installation 04 (disambiguation)}}
{{Megastructure infobox
|image=[[File:Halo 3 - Installation04B.jpg|300px]]
|description=
|location=Over the [[Installation 00|Ark]]
|anchor=
|type=[[Halo Array|Halo Installation]]
|function=Galactic sterilization/Flood containment and research
|caretaker=[[343 Guilty Spark]] (''de facto'')
|constructed=Between [[2552|September 2552]] and [[2552#December|December 2552]]
|destroyed=[[2552#December|December 11, 2552]];<ref name="Fortitude">[http://halo.xbox.com/en-us/intel/featured/video/herofortitude/bfe5038b-314a-4f17-a6be-f7613e0e3788 '''Halo Waypoint''', ''Hero-Fortitude'']</ref> destroyed due to premature firing
|diameter={{Convert|10000|km|mi}}<ref name="VIS">'''[[Halo: The Essential Visual Guide]]'''</ref>
|surface width={{Convert|318|km|mi}}{{Ref/Reuse|VIS}}
|gravity=.992G (approx){{Ref/Reuse|VIS}}
|surface temperature=-23°C to 40°C (-9°F to 104°F) (controlled){{Ref/Reuse|VIS}}
|atmosphere=1 ([[Wikipedia:Nitrogen|N<sub>2</sub>]], [[Oxygen|O<sub>2</sub>]]){{Ref/Reuse|VIS}}
}}
{{Quote|A replacement. For the ring you destroyed.|[[Thel 'Vadam]] observing the second Installation 04's construction alongside [[John-117]].<ref name="TC">'''Halo 3''', campaign level ''[[The Covenant (level)|The Covenant]]''</ref>}}

'''Installation 08'''<ref name="grim">[https://www.reddit.com/r/halo/comments/70wbxc/return_to_the_denomination_installation_04_b_c/dn6n4h7/ ''Reddit: Return to the denomination. Installation 04 (B), (C). Canonically. 343 PLS''] "Sorry, 08 and 09 make way more sense :-)
In actuality, they aren't meant to directly replace an individual ring, but to replace the loss in coverage that ring offered the galaxy." -
 [[Jeff Easterling]]</ref> was a partially completed [[Halo Array|Halo installation]] which was constructed at the [[Installation 00|Ark]] after the destruction of [[Installation 04]].<ref name="Halo">'''[[Halo 3]]''', campaign level ''[[Halo (Halo 3 level)|Halo]]''</ref> Incomplete to the point where firing would result in its destruction, this replacement was destroyed by [[Spartan-II]] [[Master Chief]] [[John-117]], only for yet [[Installation 09|another replacement]] to be constructed years later.

==Overview==
Installation 08 was designed as a very similar replacement to [[Installation 04]], or Alpha Halo, in order to ensure that the [[Forerunner]]s' Halo network was intact, and therefore able to encompass the entire [[Milky Way]] galaxy.

===Locations===
*[[Control Room (Installation 08)|Control Room]]
*"[[Avalanche]]"

==History==
===Construction===
[[File:H3-Installation04B-Surface-Unfinished.jpg|thumb|400px|left|Installation 08's unfinished interior surface.]]
Following the [[Battle of Installation 04]] and its subsequent destruction, [[Installation 00]] was notified, and an automated function began building a new replacement for the missing installation's position. Though it has been eluded that the ring was partially constructed as part of a failsafe.{{Ref/YouTube|Id=Lorestream|fYaxRoAf96s|HALO|Halo Lore Stream: The Halo Array|Y=2018|M=04|D=06|343 discuss the the Halo Array}} The main weapon was built first with the surrounding circular metal structure after by using materials that came from the [[strip mining moon]] located at the center of Installation 00.{{Citation needed|reason=Where is the construction process explained?|date=November 2019}}

Before it was released into space, the installation had a number of primary features available even though it was still not complete. These included the environment, atmosphere and main structures, and the main weapon, though the ring structure was not yet stable enough to survive this weapon's discharge.{{Ref/Reuse|Halo}} This installation was intended to be a replica of Installation 04, as similarities can be noted with the design of the control room for this ring and that of its predecessor. Installation 08 was not a complete replica in every physical characteristic as it was noted that 343 Guilty Spark as custodian of the ring had made modifications and changes to the installation.{{Ref/Reuse|Lorestream}}

At some point prior to the Battle of Installation 00, Cortana became aware of Installation 08's existence. While being held prisoner by the [[Gravemind]] on High Charity, she sent a covert message to John-117 on Earth informing him of a "solution to the Flood" that did not require activating the Halo Array.<ref name="Floodgate">'''[[Halo 3]]''', campaign mission ''[[Floodgate]]''</ref>

===Discovery===
The still-incomplete installation was released into space just above the Ark. John-117 first discovered its existence shortly after he and Thel 'Vadam killed the Prophet of Truth. He decided that the only way to stop the local [[Flood]] infestation (which included the [[Gravemind]] from [[Installation 05]]) was to fire the incomplete Installation, which was out of range of the other rings.{{Ref/Reuse|TC}}

John headed to the Flood-controlled [[High Charity]] to retrieve [[Cortana]], as she held the [[Activation Index]] from the first Installation 04. Aided in his escape by Thel, John found a crashed Pelican near the exterior of High Charity and piloted it to the incomplete ring.<ref name="C">'''Halo 3''', campaign level ''[[Cortana (level)|Cortana]]''</ref> The Pelican crashed in a snowy valley near the ring's [[Control Room]], which was situated atop a high tower. As John and Thel made their way towards the tower, [[Flood dispersal pod]]s descended from the sky to prevent them from activating the new Halo. The two, aided by [[Sergeant Major]] [[Avery Johnson]], fended off the Flood and reunited with [[343 Guilty Spark]], who let them into the Control Room.

Inside the Control Room, Guilty Spark informed the trio that the installation would be completed in a few more days. However, with Flood reinforcements banging on the Control Room doors, Johnson declared they didn't have time and decided to activate the installation immediately. Guilty Spark, realizing that a premature activation would destroy the new ring, turned against the trio and fatally wounded Sergeant Johnson. The Chief used Johnson's [[M6 Spartan Laser]] to seemingly destroy the rampant Monitor. John then proceeded to activate the new Halo with the Index kept by Cortana.{{Ref/Reuse|Halo}}

===Destruction===
{{Main|Raid on Installation 08}}
{{Quote|When Halo fired, it shook itself to pieces. Did a number on the Ark|Cortana briefing John-117 of the aftermath of their escape.{{Ref/Reuse|Halo}}}}
[[File:H3 - I08 Activation.png|250px|thumb|right|Installation 08 preparing to fire over the Ark.]]
As Spark predicted, the new installation was not ready to fire, and it began to shake itself apart and disintegrate. John and Thel escaped through the second [[phase pulse generator]] chamber and proceeded towards the ''Dawn'' in Johnson's Warthog as the shockwave of the activation caused explosive reactions all across the incomplete sections of the installation. John-117 and Thel 'Vadam barely managed to reach the ''Dawn'' before the Installation fired and subsequently exploded. Most of the Flood were destroyed in the explosion or perished from the ring's sterilization pulse, including the [[Gravemind]], while the Ark itself suffered severe damage.{{Ref/Reuse|Halo}}

By March [[2555]], a large chunk of the Halo was impaled on the Ark's central hub, like a dead, arcing tree climbing thousands of kilometers into space. There was also debris from the ring in space, some of it still raining down through the atmosphere and blooming into flame before crashing on the Ark's surface.<ref>'''Halo: Hunters in the Dark''', ''page 141''</ref> By May [[2559]], the Ark had been repaired and completed another [[Installation 09|replacement]].<ref name="HW2">'''[[Halo Wars 2]]''', campaign level ''[[Hold the Line]]''</ref>

The activation and firing of Installation 08 was extremely impractical and prone to many of faults, resulting in a few Flood spores or forms surviving on the Ark as late as [[2559#June|June 2559]],<ref name="HW2 AtK">'''[[Halo Wars 2: Awakening the Nightmare]]'''</ref> and even a few [[Kig-Yar]] and [[Jiralhanae]] surviving inside the ''[[Anodyne Spirit]]''.{{Ref/Book|Sacrifice}} This may have been due to the unfinished state of the ring, and/or because the ring was fired in the midst of its own destruction.<ref>[https://twitter.com/GrimBrotherOne/status/874380206785445888 '''Twitter - Jeff Easterling:''' ''"Guns that are blowing up while firing might not be quite as effective..."'']</ref> Another possibility may be the variable harmonics of the Halo's pulse.<ref>[https://mobile.twitter.com/GrimBrotherOne/status/766840297498157056 '''Twitter - Jeff Easterling:''' ''"There is quite a bit we still don't know about the rings. Even Spark spoke of how variable the tuning could be."'']</ref> The [[Banished]] were drawn into a fierce conflict against the Flood on the surface of the Ark after they had inadvertently released them from the rubble of High Charity, causing them to spread and multiply. After the Banished killed a [[Proto-Gravemind]] and reactivated the Ark's Sentinel defenses, the Sentinels and the Banished were able to contain the Flood and seal off High Charity once more.{{Ref/Reuse|HW2 AtK}}

===Replacement of a replacement===
{{Main|Installation 09}}
During the {{UNSCShip|Spirit of Fire}}'s [[Second Ark Conflict|battle]] with the [[Banished]] at the Ark in [[2559#March|March 2559]], Captain [[James Cutter]], Professor [[Ellen Anders]], and logistics AI [[Isabel]] formed a plan to deploy the second replacement for Alpha Halo, Installation 09, to the Soell system in an attempt to send a [[distress beacon|distress signal]] to [[Human colonies|human space]].{{Ref/Reuse|HW2}} On the way to the original site of Installation 04 however, a Forerunner [[Guardian|Guardian construct]] controlled by Cortana's [[Created]] intercepted the ring.<ref>'''[[Halo Wars 2]]''', campaign level ''[[Last Stand (Halo Wars 2 level)|Last Stand]]''</ref>

==Trivia==
*''[[Halo 3]]''{{'}}s cut [[Halo 3 skulls#Cut Hints|skull hint]] for the [[Mythic]] skull refers to Installation 08 as "Installation 04v2," likely meaning that this was the name Bungie used internally to refer to the replacement ring.
*The multiplayer map ''[[Avalanche]]'' is located on Installation 08, but Installation 00 and the Milky Way galaxy are missing from the skybox.
*The ''[[Halo Encyclopedia (2009 edition)]]'' identified Installation 08 (which had not been given an official designation at the time) as '''Installation 04B'''.<ref>'''[[Halo Encyclopedia (2009 edition)]]''', ''page 176''</ref> This naming convention has since been retconned by [[343 Industries]], with the rings' numeric designations being assigned sequentially in their order of construction.{{Ref/Reuse|grim}}<ref>[https://www.reddit.com/r/halo/comments/70wbxc/return_to_the_denomination_installation_04_b_c/dn6zt7s/ ''Reddit: Return to the denomination. Installation 04 (B), (C). Canonically. 343 PLS'' "&#91;...&#93; No, I'm saying that the main reason you would build a replacement ring is to make sure you covered for the area that was suddenly now uncovered. The Alpha etc nomenclature itself denotes the firing order of each ring. The "Installation XX" number simply denotes which number that ring is in relation to the total number of rings manufactured - regardless of where they are positioned or in which order they would fire." - Jeff Easterling]</ref>

==Gallery==
{{Linkbox|gallery=yes}}
===Concept art===
<gallery>
File:H3_Installation08_Interior.jpg|Concept art of Installation 08's interior for ''[[Halo 3]]''.
File:H3 Installation08_Reveal_Concept.jpg|Concept art of Installation 08's reveal.
File:H3 Installation08_Matte.jpg|Closeup of the Halo.
File:H3_Installation08_Clouds.jpg|Concept art of the Halo over the Ark.
File:H3_Installation08_ControlRoom_Concept_1.jpg|Early concept art of the control room, with the Ark in the background.
File:H3_Installation08_ControlRoom_Concept_2.jpg|Finalized concept art of the structure, now bearing clear similarities to the original ring's control room.
File:H3_Installation08_Wall_Concept.jpg|Concept art of the Installation's incomplete environment.
File:H3 WarthogRun Concept.jpg|Concept art for the Warthog run at the end of ''Halo 3''.
File:H3 RingConstructionConcept.jpg|Concept art for the exterior of the partially-constructed Halo.
File:H3 RingConstructionConcept2.jpg|Concept art for the interior of the partially-constructed Halo. 
</gallery>
===Screenshots===
<gallery>
File:H3 Installation 08 Citadel hologram.jpg|A hologram showing the status of Installation 08 before its destruction.
File:Installation04S.png|The Forerunner symbol that represents Installation 08.
File:Ark02.jpg|The incomplete Installation 08 rises from the Ark's center.
File:H3 HighCharityView.jpg|The partially constructed Installation 08 visible from the Ark's Citadel.
File:HaloOverArk.jpg|Installation 08 in the skies of the Ark.
File:Installation 4 2 Construct.jpg|The scaffolding on the new Halo.
File:04B Control Room.png|Installation 08's Control Room.
File:H3-Halo.png|Hologram of Installation 08
File:Halo ring 1.png|The surface of Installation 08.
File:H3 Installation 08 blowing up.jpg|The Master Chief and the Arbiter driving at full speed in Johnson's Warthog to reach the ''Dawn'' before the new Halo is destroyed.
File:Halo3Mythos.jpg|Thel 'Vadam, John-117, 343 Guilty Spark, and Avery Johnson on Installation 08 in ''[[Halo Mythos]]''.
File:H3 Halo Final Run.png|Surface of Installation 08 being constructed.
File:HaloLegends-Origins-ArkHalo.png|Installation 08 fires and crumbles over the Ark, severely damaging it.
File:H3 - I08 Unfinished.png|An incomplete section of Installation 08, as seen from space.
File:H3 - Halo Pulse Charging.png|Halo disintegrating as it prepares to fire.
File:H3 - I08 pulse charging.png|Halo charging above the ark.
File:H3 Halo Glowing.png|The ring charging as it prepares to fire.
</gallery>

==List of appearances==
*''[[Halo 3]]'' {{1st}}
*''[[Halo Legends]]''
**''[[Origins]]''
*''[[Halo: Hunters in the Dark]]''
*''[[Halo Mythos]]''
*''[[Halo: Official Spartan Field Manual]]'' {{Mo}}
*''[[Halo: Divine Wind]]'' {{Mo}}

==Sources==
{{Ref/Sources}}

{{Forerunner|array|category=no}}

[[Category:Halo Array]]