Editing Installation 07

{{Status|Canon|Featured}}
{{disambig header|the Halo installation|other articles of the same name|Zeta}}
{{Quote|This ring... is different than the others.|[[John-117]] to [[Joyeuse]] after defeating the [[Harbinger]]}}
{{Megastructure infobox
|image=[[File:HINF Zeta Halo.png|300px]]
|description=
|location=Unknown star system {{c|currently}}{{Ref/Reuse|RP13}}{{Ref/Reuse|EOD1}}<br>Anchored to [[Ephsu I]], [[Ephsu system]],{{Ref/Novel|Id=HPoLC8|PoL|Chapter=8}} [[Sagittarius Arm]], [[Milky Way]]{{Ref/Book|Id=warfleet|HWF|Page=12}} {{c|formerly}}{{Ref/Game|Id=OI09|Halo Infinite|Database|Detail=Outpost Intel 09 - To Andrew Valleros}}
|anchor=[[Ephsu I]]{{Ref/Reuse|HPoLC8}} {{c|formerly}}
|type=[[Halo Array|Halo installation]]
|function=Galactic sterilization/Flood containment and research
|caretaker=
*[[Monitor]] [[117649 Despondent Pyre]]{{Ref/Site|Id=HWQC|URL=https://www.halowaypoint.com/en-us/forums/db05ce78845f4120b062c50816008e5d/topics/query-catalog-old/7fbf60e8-92f7-4826-ac2a-ab1b5e4e3603/posts?page=10#post100|Site=Halo Waypoint|Page=Query: Catalog|D=17|M=9|Y=2019}} {{c|destroyed}}{{Ref/Quest|Id=Conservatory|HI|Connections|[[Conservatory]]}}
*[[Submonitor]] [[Adjutant Resolution]]
*[[Submonitor]] [[091 Adjutant Veridity]]
|constructed=c. [[98,445 BCE]]-[[97,745 BCE]]
|destroyed=*Deactivated from [[Installation 00]] as of [[2555#March|March 2555]]
*Heavily damaged by [[Cortana]] on [[2559#December|December 13, 2559]] during the [[Battle for Zeta Halo]].
|destroyed-title=Status
|diameter= {{Convert|10000|km|mi|sp=us}} {{c|formerly {{Convert|30000|km|mi|sp=us}}}}{{Ref/Novel|Id=p33|Pri|Chapter=33}}
|surface width={{Convert|318|km|mi|sp=us}}{{Ref/Reuse|HitD1}}
|surface depth={{Convert|47|km|mi|sp=us}}{{Ref/YouTube|Id=Lorestream|fYaxRoAf96s|HALO|Halo Lore Stream: The Halo Array|Y=2018|M=04|D=06|343 discuss the Halo Array}}
|gravity=
|surface temperature=
|atmosphere=
}}
'''Installation 07''', also known as '''Zeta Halo''',{{Ref/Reuse|HitD1}}{{Ref/Generic|Id=source|[[:File:H3 halo inner ring title.PNG|Halo 3 Texture files: ''halo inner ring'']]}} originally known as '''Gyre 11''' by the Forerunners,{{Ref/Novel|Id=POL9|POL|Chapter=9}}, and '''Oth Koronn''' by the [[Banished]],{{Ref/Book|Enc22|Page=444}} is one of the [[seven]] rings in the [[Forerunners]]' [[Halo Array]], located in the [[Sagittarius Arm]] of the [[Milky Way]] galaxy.{{Ref/Reuse|warfleet}}

Unlike the other six remaining Halo installations, which were constructed as a separate array of rings with the diameter of 10,000 kilometers,{{Ref/Novel|Id=Cry40|Cry|Chapter=40}} Installation 07 is the only surviving ring from the original main array of twelve 30,000-kilometer-wide Halos.{{Ref/Novel|Id=p32|Pri|Chapter=32}} However, the installation's diameter was reduced to 10,000 kilometers after most of its superstructure was discarded as a result of heavy damage.{{Ref/Novel|Id=p34|Pri|Chapter=34}}

[[117649 Despondent Pyre]] was the assigned [[monitor]] of Installation 07 until her destruction during a [[Battle for Zeta Halo|conflict]] between the [[United Nations Space Command]] and the Banished that began in late [[2559]].{{Ref/Reuse|Conservatory}} The [[submonitor]] [[Adjutant Resolution]] took over as the caretaker of the installation following his superior's destruction.{{Ref/Quest|Id=Spire|HI|Connections|[[Spire (Halo Infinite level)|Spire]]}} It was during this conflict that Installation 07 would once again be heavily damaged, this time purposefully by [[Created]] leader [[Cortana]].{{Ref/Quest|Id=Silent Auditorium|HINF|Endless (Halo Infinite)|[[Silent Auditorium]]}}

==History==
===Forerunner era===
====Construction and commissioning====
Unlike the other six rings in the final Halo Array, Installation 07 was manufactured at the [[greater Ark]] instead of [[Installation 00]] or the "lesser Ark". As a result, it was originally three times the size of a normal Halo ring (30,000 kilometers in diameter).{{Ref/Reuse|p33}} Like the other Halos, Installation 07 served a secondary purpose as a [[Lifeworker]] preserve for biological specimens from across the galaxy as part of the [[Conservation Measure]]. Installation 07 was primarily dedicated to [[human]]s, being home to various species and subspecies of the human genus, alongside numerous fauna and flora. The humans living on the installation identified themselves as [[Tudejsa]], meaning "the People" or "People from Here."{{Ref/Novel|Id=p1|Pri|Chapter=1}} In the beginning, these humans were allowed to build their own societies and were mostly left undisturbed by the Forerunners.{{Ref/Novel|Id=p4|Pri|Chapter=4}} Some of the People even constructed rudimentary cities.{{Ref/Novel|Id=p2|Pri|Chapter=2}}

During the [[Forerunner-Flood war]], [[Master Builder]] [[Faber]] placed Installation 07, along with the other eleven rings in the original Array, under control of the [[Contender-class artificial intelligence|Contender-class AI]] [[Mendicant Bias]], and one of the primary extensions of the AI was placed on the ring.{{Ref/Novel|Id=p19|Pri|Chapter=19}} At one point, the Master Builder broke his deal with the [[Librarian]] and began to use the human specimens on the ring for his brutal experiments on the [[Flood]]. Some of the Lifeworkers serving on the installation complied and aided Faber's minions in these experiments, while those most loyal to the Librarian worked to keep the installation's biological preserves intact. Faber also forcibly drafted [[Warrior-Servant]]s as an additional security force for the installation. In their exhaustive experiments, the Master Builder's researchers found that the majority of humans were apparently immune to the Flood, which they believed to be a result of a "cure" developed by the [[Ancestors]] during the ancient [[Human-Flood war|human-Flood conflict]]. In reality, no cure ever existed, and the humans' apparent immunity was the result of the Flood's ongoing strategy to target Forerunners only.{{Ref/Novel|Id=p41|Pri|Chapter=41}}

Faber's researchers believed that a cure to the Flood might be found via extracting ancestral [[mind transfer|memory imprints]] from humans who carried the Librarian's special ''[[geas]]''. Since the human specimens on the installation lacked these imprints, Faber ordered his forces to gather humans from the Librarian's [[Erde-Tyrene civilization|special population]] on [[Earth]] and transplant them to Installation 07. This was against the instructions of the Librarian and the [[Ecumene Council]], who deemed the presence of ancient human warriors on a Halo too great of a security risk. Consequently, both the installation's own human specimens and humans from Earth would be used in the Master Builder's experiments,{{Ref/Reuse|p19}} in what the humans came to know as the "[[Palace of Pain]]." However, the "palace" was not in fact a single location as the humans believed, but many [[Flood research facility|Flood research facilities]] across the ring, most of them being re-purposed Lifeworker biological research stations.{{Ref/Novel|Id=p39|Pri|Chapter=39}}

According to the story that [[Gamelpar]] told [[Chakas]], the ring was moved five times since he was brought from Erde-Tyrene before it settled in the system where it remained while Faber's experiments were conducted. Gamelpar's story also suggested that the installation was fired twice, once presumably in the [[Charum Hakkor system]] but the second time for an unknown reason, possibly a directed pulse at [[Faun Hakkor]] rather than both planets falling victim to the same pulse.{{Ref/Reuse|p4}}{{Ref/Note|[[Gamelpar]] states to [[Chakas]] "and twice we saw something other than brightness and darkness - something terrible came out of the hub and the center of the wheel - something that gave us fits and hurt the soul. But we did not die. We moved again. Under the orange sun, where [[Vinnevra]] was born. It was under that sun that the Forerunners came in their boats and carried us off to the [[Palace of Pain]]."}}

====Under new management====
[[File:MythosPrimordial.jpg|thumb|250px|The Primordial and Mendicant Bias on Installation 07.]]
Circa [[97,495 BCE]], around sixty years after Faber had begun his unsanctioned experiments, he charged Mendicant Bias with test-firing Installation 07 in [[Charum Hakkor]]'s [[Charum Hakkor system|system]]. As an unprecedented side-effect of this firing, the [[Primordial]], an entity that had been imprisoned on the planet for millennia–in fact a [[Gravemind]] left behind by the [[Precursor]]s–was released from its near-impervious [[stasis capsule|cell]]. The Primordial, or the Captive as it was known to the Forerunners, was then taken on the ring by order of the Master Builder. Lifeworkers in the employ of the Master Builder studied the creature, but remained unsure as to its true nature - while some believed it to be related to the Flood, others did not.{{Ref/Reuse|p19}}

Not trusting the Lifeworkers, Faber assigned Mendicant Bias to interrogate the Primordial,{{Ref/Reuse|p19}} which, using its knowledge of the Precursors' plan and compelling arguments that the Forerunners' rule led to eternal stagnation, eventually managed to turn the AI against its Forerunner masters. The creature also managed to manipulate the Master Builder into complying it with its schemes; whether Faber was fully aware of the Primordial's goals, or simply an uninformed pawn, is unclear.{{Ref/Reuse|p39}} The Primordial then took charge of operations on Installation 07, encouraging the Master Builder to continue his experiments on humans, apparently for no reason other than its own amusement.{{Ref/Reuse|p41}}

The Master Builder himself departed the installation shortly after the Primordial had been brought in, leaving his researchers in charge. Over time, Faber reduced the role of Lifeworkers on the installation, eventually confining them to smaller preserves with select groups of humans, while his minions continued their attempts to infect humans.{{Ref/Novel|Id=p25|Pri|Chapter=25}} As Faber's researchers took more and more humans from across the ring for their experiments, many human societies effectively collapsed; the People abandoned the cities out of fear that the Forerunners would come take them away, escaping to the wilderness.{{Ref/Reuse|p4}}

After Mendicant Bias had been subverted by the Primordial, the AI broke the safeguards in the ring's various [[Flood containment facility|Flood containment facilities]],{{Ref/Reuse|p25}} allowing the parasite to spread to various sections of the installation. The Flood devoured large areas of the Halo's artificial landscape, covering it with [[Flood hive|Flood biomass]].{{Ref/Novel|Id=Riser|Pri|Chapter=Riser's Story}} As more and more Forerunners succumbed to the Flood across the installation, the Master Builder had a machine known as the [[Composer]] used to stave off the effects of Flood infection in a number of infected Forerunners.{{Ref/Novel|Id=p24|Pri|Chapter=24}}

====Crisis====
After Installation 07 had been officially considered missing for 43 years, the Master Builder had a second Halo ring transported to the primary [[San'Shyuum]] world [[Janjur Qom]] and authorized its activation to suppress [[Battle of Janjur Qom|a rebellion]], wiping out all but few of the San'Shyuum.{{Ref/Note|In ''[[Halo: Primordium]]'', while explaining what has gone on to [[Chakas]], [[Genemender-Folder-of-Fortune]] tells him that Installation 07 was used to sterilize [[Janjur Qom]]. However, this contradicts ''[[Halo: Cryptum]]'' where [[IsoDidact|Bornstellar]] realizes that [[Faber]] has lost a Halo. Furthermore, on page 275 of ''Cryptum'', the Halo in the [[San'Shyuum home system]] is specifically identified as a second installation. In ''[[Halo: Ghosts of the Gyre]]'', [[Adjutant Vigilance]] -- who was once Genemender -- refers to the Master Builder using "a Halo ring" on Janjur Qom which caused many stationed on Installation 07 to rebel.}} However, he failed to foresee the consequences of this decision. Immediately following the firing, many of the [[Warrior-Servant]]s and [[Lifeworker]]s assigned to serve under Faber's [[Builder]] forces openly [[Battle for Gyre 11|rebelled]] against the Master Builder, viewing his actions as a grave offense against the [[Mantle]]. This rebellion was, for the most part, violently suppressed by Faber's [[Builder Security]] forces and the remaining Warriors and Lifeworkers were given a choice to either serve Faber or be killed. Some chose to ally with the Master Builder while those loyal to the Council continued to resist, sabotaging power stations and other facilities in an attempt to cripple the installation from within.{{Ref/Novel|Id=p29|Pri|Chapter=29}}

Once the news of Faber's use of a Halo installation against the San'Shyuum reached the Ecumene Council, Faber was arrested and put to trial on [[Maethrillian]], the Forerunner capital world. The other eleven Halo rings were gathered in orbit over the Capital, while Installation 07 remained missing after the incident at Janjur Qom.{{Ref/Novel|Id=Cry35|Cry|Chapter=35}}

====Battle of the Capital====
{{Main|Fate of Maethrillian}}
During Faber's trial, Installation 07 appeared over [[Maethrillian]]. The rampant Mendicant Bias managed to subvert its other extensions on five of the remaining Halo rings, and cripple the capital's forces, while releasing the Master Builder from captivity. However, the emergent [[IsoDidact]] used a control code to temporarily stun Mendicant Bias, which allowed the Capital's defenses to respond to the attack and assault the Halos under Mendicant Bias' control. The capital's fleets opened fire on Installation 07, while the Halo's [[sentinel]]s and the Master Builder's ships attempted to defend it.{{Ref/Novel|Id=Cry36|Cry|Chapter=36}}{{Ref/Novel|Id=Cry37|Cry|Chapter=37}}{{Ref/Novel|Id=Cry38|Cry|Chapter=38}} Many of the ships involved in the battle were destroyed and crashed across the ringworld.{{Ref/Reuse|p29}} Despite the installation taking heavy damage, Mendicant Bias successfully activated the ring's main weapon at the conclusion of the battle, presumably wiping out all life in the Capital system.{{Ref/Reuse|p25}}

===Refuge===
{{Main|Battle for Gyre 11}}
Following the battle at the capital, Installation 07 retreated into a [[slipspace portal]], reappearing in a distant star system near the galaxy's edges. This was part of a security measure beyond Mendicant Bias' control—in order to prevent the ring from falling in the wrong hands, it had been programmed to [[self-destruct|enter a course which would result in a collision]] with [[Wolf-faced planet|a planet]] in several days.{{Ref/Reuse|p25}} As the primary, automated control systems had been sabotaged,{{Ref/Reuse|p32}} the Primordial and Mendicant Bias were unable to direct the Halo's movements. Instead, they began to gather humans in a last-ditch effort to use them to manually steer the ring away from its destructive course.

After its successful retreat, Installation 07 began automated measures to repair the damage it had taken. Over the next few days, entire plates of the ring's superstructure were replaced and rebuilt.{{Ref/Novel|Id=p5|Pri|Chapter=5}} However, the installation was still low on power due to many of the power stations being down, and entire sections kept experiencing power outages. Meanwhile, the Halo's human and Forerunner occupants were caught amidst the chaos. Mendicant Bias used its all-encompassing control to corrupt most ancillas and [[Forerunner personal armor|Forerunner armors]] on the ring, turning the armors into death-traps for their wearers. This forced Forerunners on the installation to remove their armor in order to survive.{{Ref/Reuse|p19}}

The [[Lifeworker beacon]]s across the installation, used to transmit orders to the local humans via their ''[[geas]]'', were giving conflicting commands which kept changing as the various factions fought for control of the beacons. Similar beacons were used to transmit orders to Lifeworkers and their ancillas across the ring, and although they believed the orders came from the Librarian, there was no definite certainty of this. Acting under these orders, a Lifeworker known as [[Genemender-Folder-of-Fortune]] extracted and stored the consciousnesses and ancient personality imprints of any humans he found, doing the same to himself, believing it would save him from having to serve the Master Builder.{{Ref/Reuse|p19}}

During the battle above the capital, two Earth humans, [[Chakas]] and [[Riser]], who had been captured by Faber and were aboard ships headed to Installation 07, crashed in different parts of the ring. Chakas landed near a village, where a young woman known as [[Vinnevra]] found him and later took him to see her grandfather, [[Gamelpar]], who had been brought on the ring from Earth by Faber's minions long ago. The group then proceeded to travel under the guidance of Vinnevra's ''geas'', which had activated upon Chakas' arrival, but upon arriving at the destination, they discovered it to be a "Palace of Pain", where the Primordial itself and a number of [[war sphinx]]es were herding numerous humans inside.{{Ref/Novel|Id=p8|Pri|Chapter=8}} After traveling in the opposite direction for several days, the group reunited with Riser, who had landed in a Flood-infested region nearby. Eventually, they came across a rail transport which brought them to Lifeworker Central,{{Ref/Reuse|p24}} where a monitor instructed them to enter another transport.{{Ref/Reuse|p25}}

====Salvage effort====
The humans were then taken to the facility where Mendicant Bias' core was housed. There, humans from Earth were separated from the Tudejsa, and their ancestral personality imprints were removed by Mendicant Bias and the Primordial. They were given a choice to cooperate with Mendicant Bias and have their revenge against the Forerunners for [[Plague War|destroying their civilization]] ten thousand years earlier; however, they would first have to help save the Halo from colliding with the approaching planet. Those who accepted Bias' offer were sent to various control stations spread out across the Halo, including the [[Cartographer]].{{Ref/Reuse|p32}} However, humans alone did not possess the knowledge necessary to properly interface with the ring; instead, Flood-infected Forerunners processed by the Composer were brought in and connected with each human to the Halo's control systems.{{Ref/Reuse|p33}} As Installation 07 approached the planet, the controllers successfully managed to reorient the ring in a way the planet would pass through the center; this way, the ring would take heavy damage but had a chance of surviving.

Despite this, there was still a grave risk that the gravitational pull of the planet would tear the Halo apart. Plates of foundation material were moved over the exterior walls in preparation for repairs during the passage. Sentinels and other craft were positioned across the Halo, firing their engines in an attempt to alter the installation's course, with little success. The Halo's central [[hard light]] hub and spokes, typically used in the activation process of the main weapon, were activated to slow down the ring's passage over the planet, and to borrow some of the planet's velocity in order to alter the ring's orbit in an effort to prevent collisions in possible future orbital passes. However, the hard-light structures did not last long against the planet's surface, disintegrating shortly after the impact. The installation's outer walls quickly exceeded their capacity to manage the strain of the planet's tidal stresses, coming apart at various points. As the walls gave way, the foundational plates began to bend and distort, with massive gaps–some of them hundreds of kilometers in diameter–opening between them.{{Ref/Reuse|p33}}{{Ref/Reuse|p34}}

====Retaking and reduction====
While the installation had already begun its passage, a fleet led by the [[IsoDidact]] appeared, and the Didact used his control codes to shut Mendicant Bias down. He immediately entered the Cartographer and connected to the installation's controls with Chakas, while dreadnoughts from the Didact's fleet moved to provide power via connections across the ring. Despite the additional power supply, the Halo could not be saved in its entirety. In order to relieve the tidal stresses exerted on the Halo, the Didact ordered that the installation be reduced by discarding the most damaged plates; this would also allow repairs to be made at the lesser Ark. To preserve the most important sections, they were locked into slipspace stasis, effectively rendering them invulnerable to damage from the outside. After the passage of the planet, the ring's central hub and spokes were activated to act as support braces for the intact sections while two-thirds of the superstructure was shed into space, contracting the Halo to a diameter of 10,000 kilometers. On its remaining power, the installation generated a slipspace portal and transitioned to the greater Ark.{{Ref/Reuse|p33}}{{Ref/Reuse|p34}}

====Aftermath====
[[File:TerminalArkArray.jpg|thumb|250px|Installation 07 with the other six rings.]]
Most of the installation's surviving biological specimens, including humans, were saved by the Lifeworkers and relocated to the Ark.{{Ref/Novel|Id=p35|Pri|Chapter=35}} Mendicant Bias' core on the installation was deactivated, while the AI itself was forced to undergo a process to "correct" its rampancy.{{Ref/Reuse|p39}} The Primordial was captured and placed in a cage within a chamber deep underneath the installation's surface; there, the Didact interrogated the being with an injured Chakas, before executing it.{{Ref/Novel|Id=p40|Pri|Chapter=40}}{{Ref/Reuse|p41}} The majority of the Flood, including ten inactive [[Proto-Gravemind]]s and the infected Forerunners processed by the Composer, remained on the ring, watched over by a number of remaining monitors. By order of the Didact, the Halo, now shrouded in perpetual cloud, was eventually sent through a slipspace portal to remain as a memorial, a "sacred tomb" for the millions of beings that had died there.{{Ref/Novel|Id=p42|Pri|Chapter=42}} At the same time, it was intended to be used in concert with the final, newer Halo Array if mass galactic sterilization was deemed necessary.{{Ref/Novel|Id=string36|Sil|Detail=String 36}}{{Ref/Note|Though never officially stated, Installation 07's primary weapon was presumably upgraded at some point to become omnidirectional like those of the newer array rather than the unidirectional pulse it had as part of the older array. Otherwise, Installation 07 never could've acted as part of the newer array in an act of mass galactic sterilization.}}

After Installation 07 was reclaimed from Mendicant Bias and the Primordial, the [[Librarian]] spent time on the ring, creating the new [[Cartographer#Installation 07|Cartographer]], setting the parameters for [[the Monument]] and giving the ancillas new purpose after so much of their original purpose had been lost.{{Ref/Reuse|PoL16}}

At the conclusion of the Forerunner-Flood war, Installation 07 was positioned at coordinates that would allow the Halo Array to blanket the entire galaxy in its destructive pulse. Installation 07 was activated along with the other six rings in the final Halo Array, wiping out all life within its effective radius of 25,000 light years.{{Ref/Book|Id=Enc22P350|Enc22|Page=350}}

====Reintroduction====
[[File:HINF SA Central Chamber.png|thumb|250px|The central chamber of the Silent Auditorium.]]
Shortly after the activation of the Halo Array in 97,445 BCE, [[117649 Despondent Pyre]] noted that the [[Flood]] were successfully eradicated and the [[Conservation Measure]] had allowed countless indexed species to [[Reintroduction|return]] to their worlds anew. However, despite [[Halo]]'s intended function being to deny the Flood its food source by destroying all sentient life,{{Ref/Game|Id=af1|HI|HINF:Audio log#Archaeological Findings 2|Banished Audio log|Detail=Archaeological Findings #01 - Reintroduction}} a previously uncatalogued species known as the [[Xalanyn]] were discovered to have survived the array's activation. This discovery was quickly brought before the remaining members of the Forerunner Council.{{Ref/Game|Id=af3|HI|HINF:Audio log#Archaeological Findings 2|Banished Audio log|Detail=Archaeological Findings #03 - Xalanyn}} The council decided to engage in a parley with the Xalanyn, and Installation 07 was moved from its firing position to the [[Ephsu system]] so that it was in close proximity to the Xalanyn's homeworld. Delegates from both sides met at the [[Silent Auditorium (location)|Silent Auditorium]].{{Ref/Game|Id=af4|HI|HINF:Audio log#Archaeological Findings 2|PartText=Banished Audio log|Detail=Archaeological Findings #04 - A Curious Directive}}{{Ref/Site|Id=CFStrike|URL=https://www.halowaypoint.com/news/canon-fodder-ship-strike|Site=Halo Waypoint|Page=Canon Fodder - Ship Strike|D=22|M=04|Y=2023}} It was here that the Forerunners imprisoned the Xalanyn within Installation 07.{{Ref/Quest|Hi|Endless (chapter)|ChapterLinkText=Endless|Silent Auditorium}} Following this, Installation 07 was not returned to its original firing position and remained in orbit over [[Ephsu I]].{{Ref/Reuse|HPoLC8}}{{Ref/Reuse|CFStrike}} This event was removed from Zeta Halo's records to hide the Forerunners' final, terrible secret.{{Ref/Reuse|Gyre}}

Following the firing of the array and per the Librarian's instructions, the ancillas of Zeta Halo spent centuries gathering the various essences, imprints and damaged submonitors left over from the civil war on the ring and gave them a new home in [[the Monument]]. The ancilla continued keeping watch over the Monument and the lifeforms living on Zeta Halo for the countless eons that followed as per the instructions of the Librarian and the IsoDidact. Their only deviation from these instructions was to purify the ring's atmosphere and end the shroud of mist over it because of the effect that it was having on the [[tullioc]].{{Ref/Reuse|PoL15}}

===Modern era===
====Reactivation====
On [[2552#November|November 3, 2552]], during the [[Battle of Installation 05]], a signal was sent to this Halo from [[Installation 05]], putting the former—as well as the entire Array—on standby mode. Installation 07 was then ready to fire on demand.{{Ref/Level|H2|H2:The Great Journey|The Great Journey}}

====Deactivation and later history====
Later in 2552, during the [[Battle of Installation 00]], Installation