Editing Orbital defense platform

{{Status|Canon}}

[[File:H2A Terminals - ODPs.jpg|300px|thumb|{{Class|Moncton|orbital weapon platform}}s in deployment over a colony world.]]

{{Quote|That MAC gun can put a round clean through a Covenant capital ship.|[[Avery Johnson]], describing the gun of a ''Moncton''-class orbital weapons platform.{{Ref/Reuse|H2Cairo}}}}

An '''orbital defense platform''' (ODP){{Ref/Book|Enc11|Page=294}}, or '''orbital weapon platform''' (OWP), is a kind of armed satellite employed by the [[United Nations Space Command]] for defensive purposes. They can range massively in size and scope, and are frequently deployed in a [[geosynchronous orbit]] around a given world to act as a defensive line against a potential invading enemy force.{{Ref/Book|Id=Enc22|Enc22|Page=34}}{{Ref/Site|Id=CFGlassed|URL=https://www.halowaypoint.com/en-us/news/canon-fodder-looking-glassed|Site=Halo Waypoint|Page=Canon Fodder - Looking Glassed|D=16|M=01|Y=2021}} Within the UNSC, orbital weapons platforms are assigned the [[hull classification symbol]] '''OWP'''.{{Ref/Book|Id=WF30|HWF|Page=30-31}}

Orbital weapons platforms serve to guard their charges via a number of means. The term is a loose descriptor that can encompass a range of satellite types, ranging from small and/or unmanned satellites that consist simply of a missile pod linked to a targeting array and communications relay, up to the massive manned [[space station]]s that form the most predominant and iconic imagery of the concept. The largest of these are built around a core [[Capital ship|capital]]-scale [[Magnetic Accelerator Cannon]] (MAC), colloquially referred to as a "big stick", and serve as some of the largest and most powerful examples of MAC weaponry available to [[human]]ity.{{Ref/Reuse|Enc22}}{{Ref/Reuse|CFGlassed}}{{Ref/Site|URL=http://community.spartangames.co.uk/index.php?/topic/16805-halo-waypoint-update-with-spartan-new-ships/page-7|Site=Spartan Games|Page=Halo Waypoint Update with Spartan - NEW SHIPS!|Detail=(defunct)|Quote='Super MAC' is more a category than a specific weapon. Many defense platforms do not have 'super MACs' as used by Reach installations, for example.}}

Alongside their primary defensive weaponry, ODPs may also equip a number of secondary armaments to aid in their own defence. These include [[point-defense gun]]s, such as in case of the [[M606 Goalkeeper point defense gun|M606 Goalkeepers]] included on the {{Class|Moncton|orbital weapon platform|}}. Larger OWPs usually also equip [[hangar]] support facilities for [[dropship]]s and [[Space fighter|strikecraft]], with the precise examples carried varying across the fleet. OWPs are deployed in battle clusters of (in the case of the ''Moncton'') three stations, each designed to mutually support and reinforce one another. As such, each carries a slightly different loadout, allowing the three to each specialise in a particular collateral function and cover one another's bases.{{Ref/Reuse|WF30}}

===Deployment===

Within the UNSC, orbital weapons satellites are typically manned, maintained and operated by the [[UNSC Air Force]]{{Ref/Book|OSFM|Page=136-138}}, presumably administered by the [[Orbital Defense Command]].{{Ref/Level|H4|Midnight}} However, they may be employed for collateral and administrative functions by the [[UNSC Navy]]. For example, the platform [[Cairo Station (station)|Cairo Station]] served as the command centre for [[Fleet Admiral]] [[Terrence Hood]] during the [[Battle for Earth]] in late [[2552]], alongside hosting a naval ceremony to promote the survivors of the [[Battle of Installation 04]].{{Ref/Level|Id=H2Cairo|H2|Cairo Station}}

===Power generation===

 

==Classifications of orbital defense platform==

Several kinds of OWP are employed by the UNSC, the most prominent of which consisting of large space stations built around a central core MAC in a similar fashion to most other [[UNSC starship]]s.

 

===''Erőd''-class===

The ''Erőd''-class OWPs were, during their tenure, among the most powerful stations ever constructed. They consisted of a single rapid fire [[Super MAC]] that was considered a threat to even [[Covenant starship]]s, though relied upon separate ground-based generators for their power. This Achilles heel ultimately proved their downfall during the [[Space engagements over Reach|space battles]] in orbit over [[Reach]] during the planet's [[Fall of Reach|fall]]. Prior to this, ''Erőd''s formed a core component of Reach's twenty-strong OWP lineup.{{Ref/Book|Id=Quezon|Enc22|Page=36}}

File:HFB_ErodClassOWP_Boxart.png|[[Quezon Station]], one of the ''Erőd''-class ODPs over Reach, alongside its battle cluster.{{Ref/Reuse|Quezon}}

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The ''Moncton''-class OWPs serve as the primary defensive battlements surrounding [[Earth]], with at least one example also constructed over Reach.{{Ref/Comic|Id=BootCamp|HFoRBC|Issue=1}} They were in service by at least [[2517]]{{Ref/Reuse|BootCamp}}, with the onset of the [[Human-Covenant War]] in [[2525]] spurring on a massive construction project for the constellations of ''Moncton'' satellites over Earth. By 2552, this program was still incomplete, by which time the planet held around three hundred stations in its defence.{{Ref/Novel|HFS|Page=104}}{{Ref/Reuse|H2Cairo}}

File:H2A CairoStation Loadscreen.png|[[Cairo Station (station)|Cairo Station]] alongside its battle cluster, consisting of [[Athens Station]] and [[Malta Station]].

 

A number of hitherto-unnamed OWPs have been observed over various [[Human colonies|colony worlds]].

File:Magnetic_Accelerator_Cannon.png|An unnamed ODP over Reach, firing its main gun. Unlike regular ODPs in which the cannon is aligned vertically with the station's axis, the gun here is laterally-mounted.{{Ref/Film|HLeg|Story=Origins}}

File:Orbitoldefencestation.jpg|An unnamed ODP uncovered by [[343 Guilty Spark]] within the data banks of {{UNSCShip|Pillar of Autumn}}.{{Ref/Game|HCEA|Terminal (Halo: Combat Evolved Anniversary)|Terminal 1}}

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[[File:Magnetic Accelerator Cannon.png|thumb|300px|An ODP above Reach firing its main cannon.]]

By [[2552#August|August 2552]], [[Reach]] was protected by 20 orbital defense platforms, with at least one being an {{Class|Erőd|orbital weapon platform}}.{{Ref/Reuse|Enc22}} Another was a {{Class|Moncton|orbital weapon platform}} which was in place by [[2517|May 2517]].{{Ref/Comic|Id=bootcamp|[[Halo: Fall of Reach - Boot Camp]]}} A number of Reach's ODPs were online by [[2527]].{{Ref/Book|Halo: Evolutions - Essential Tales of the Halo Universe|Page=50}} During the [[Fall of Reach]], the orbital defense platforms inflicted massive losses on the Covenant armada in the opening stages of the battle, as well as providing fire support for ground forces on Reach. Large numbers of UNSC forces were deployed to protect the orbital platforms' planetside power generators, but they ultimately fell against determined enemy assaults. The disabling of the defense platforms was a major factor on the battle's outcome.{{Ref/Novel|Halo: The Fall of Reach}}

The outbreak of the [[Human-Covenant War]] prompted a massive expansion of [[Earth]]'s defenses. Even as late as the [[Fall of Reach|Battle of Reach]] preparations had not yet been completed; a series of new platforms above Earth were set to come online on September 14.{{Ref/Novel|[[Halo: First Strike]]|Page=104}} By October 2552, some 300 ODPs were operational.{{Ref/Level|H2|The Armory}} Many of Earth's ODPs were named after points of interest that they roughly kept station over.

A portion of the 300 platforms first saw action at the early stages of the [[Battle for Earth]]. ''[[Athens Station]]'' and ''[[Malta Station]]'' were each destroyed by [[antimatter charge]]s installed by [[Covenant]] boarding parties, while ''[[Cairo Station (station)|Cairo Station]]'' only narrowly avoided the same fate as the other platforms thanks to [[John-117|Master Chief]]'s removal of the bomb on board.{{Ref/Reuse|H2Cairo}} The ODPs were used throughout the drawn-out Battle for Earth after more Covenant fleets began to arrive in the following days and weeks,{{Ref/Generic|Id=lootcrate2|Heading=[[Halo Legendary Crate]]|Subheading=[[Halo Legendary Crate/Data Drops|Data Drop #2]]}} but the Covenant might have already destroyed numerous stations especially when the final Covenant [[Great Schism|loyalist]] [[Truth's fleet|naval forces]] and the [[Prophet of Truth]] himself arrived at Earth on the [[Forerunner Dreadnought]] on [[2552#November|November 17]].{{Ref/Level|Halo 3|[[Crow's Nest]]}}{{Ref/Level|Id=TGJ|Game=Halo 2|Level=[[The Great Journey (level)|The Great Journey]]}}

During the [[Ur-Didact|Didact]]'s [[New Phoenix Incident|attack on Earth]] in mid-[[2557]], ODPs defended Earth from the Didact alongside the ships of the UNSC Home Fleet. However, the Didact's ship ''[[Mantle's Approach]]'' was too heavily shielded for even the ODPs Super MACs and as a result, the Master Chief had to destroy the ship from the inside with a [[HAVOK tactical nuclear weapon|HAVOK nuclear warhead]].{{Ref/Level|Halo 4|[[Midnight]]}}

Several orbital defense platforms were stationed around [[Camber]]; these were eventually destroyed when the Covenant [[Battle of Camber|assaulted]] the moon during the Human-Covenant War.

File:HTMCC H2A Achievement BombSquad.png|''Halo 2: Anniversary'' concept art of a ''Moncton''-class ODP shown in orbit above Earth.  

**''[[Reach (TV Series)|Reach]]'' {{Mo}}