Editing Vacuum suit

{{Era|Covenant|Human|UNSC|HCW|Post}}
[[File:Halo-A-Hero-Falls-Spacewoman.png|thumb|300px|A [[human]] wearing a vacuum suit outside a [[space station]] in the [[Halo 5: Guardians A Hero Falls trailer|''Halo 5: Guardians'' A Hero Falls trailer]].]]
'''Vacuum suits''' are a form of protective suit used for [[extra-vehicular activity]] in outer space, intended to protect the wearer from the effects of vacuum and prevent asphyxiation. They also provide protection from dust and other particles which could damage the user and their equipment. Vacuum suits are completely sealed and come with an extra supply of [[oxygen]] (in the case of humans) or whatever other gas the user breathes.

==UNSC==
[[File:Boarder.png|thumb|A Sabre crewman wearing a vacuum suit.]]
The [[UNSC]] utilizes several types of vacuum suits. 

The vacuum suits generally used by UNSC pilots and infantry during space operations are based upon the universal BDUs used by the [[UNSC Marine Corps|UNSC Marines]], [[UNSC Army|Army]] and the [[UNSC Air Force|Air Force]]. Though identical in outward appearance to regular combat BDUs, these suits incorporate a fully pressurized body suit and a vacuum-rated [[CH252 helmet#ECH252 helmet|ECH252 combat helmet]]. The variant worn by UNSC pilots is minimally armored, while the A/X combat suit used by Marines features heavy armor plating. These suits possess no EVA thrusters by default, but are compatible with EVA gear integration.<ref>'''Halo Encyclopedia (2011)''', ''page 57''</ref>

Pilot-issue versions of these vacuum suits were used by the [[YSS-1000 Sabre]] crews who boarded the [[Covenant corvette]] ''[[Ardent Prayer]]'' during [[Operation: UPPER CUT]]. Personnel working aboard UNSC refit stations such as ''[[Anchor 9]]'' also used similar vacuum suits.<ref>'''Halo: Reach''', campaign level ''[[Long Night of Solace (level)|Long Night of Solace]]''</ref> Marine-issue vacuum suits were used by [[Avery Junior Johnson|Sergeant Johnson]] and his squad as they neutralized the unsecured data of the {{UNSCShip|Circumference}} in orbit above [[Reach]].<ref>'''Halo: The Fall of Reach''', ''page 313''</ref> Vacuum combat suits are also used during atmospheric missions where atmospheric hazards, such as nearby [[glassing]], are present. This was seen during the [[Battle of Asźod]], where UNSC Marines assigned to the {{UNSCShip|Pillar of Autumn}} used vacuum combat suits.<ref>'''Halo: Reach''', campaign level ''[[The Pillar of Autumn (Halo: Reach level)|The Pillar of Autumn]]''</ref>

A model of vacuum suit used by UNSC Marines in the early years of the war was more clearly distinct from ground-based BDUs, featuring a green full-body suit, with olive-drab armor plates, and a helmet equipped with a [[Heads-up display|HUD]] and [[COM]] systems.<ref name="genesis">''[[Halo Wars: Genesis]]''</ref> They were used by the teams sent to clear the NAV database of the {{UNSCShip|Prophecy}} during the [[Harvest Campaign]] in [[2531]].<ref name="genesis"/>

Bulky, black vacuum suits<ref>'''Halo: Contact Harvest''', ''page 126''</ref> with a compartmentalized design and [[Sealant foam|self-sealing foam]] injectors were used by [[Staff Sergeant]]s [[Avery Junior Johnson|Johnson]] and [[Nolan Byrne|Byrne]] during humanity's [[Skirmish on Minor Transgression|first combat encounter]] with the Covenant in [[2525]].<ref>'''Halo: Contact Harvest''', ''page 130''</ref>

===Black body suit===
{{Main|Black body suit}}
This body suit is a form-fitting suit of polymer body armor that has systems that mask the infrared signature of the wearer, as well as creating a comfortable environment. The suit is fully sealed, and has an oxygen reserve of 15 minutes. The helmet has encrypted communications gear and a HUD, along with thermal sensors and motion detectors. Unfortunately, the suit's general complexity leads to complications. Over prolonged periods of time the suit will become very uncomfortable to wear, and is difficult to repair in the field.<ref>'''Halo: The Fall of Reach''', ''page 79''</ref>

These suits were used by the [[SPARTAN-II Program|SPARTAN-IIs]] in several missions before they got their [[MJOLNIR Powered Assault Armor/Mark IV|MJOLNIR Armor]].

===MJOLNIR Armor===
The [[MJOLNIR Powered Assault Armor]] system utilized by the [[SPARTAN-II Program|Spartan-IIs]] has 90 minutes of breathable atmosphere.<ref>'''Halo: The Fall of Reach''', ''page 120''</ref> The vacuum capabilities of the armor were demonstrated during the initial phase of the [[Battle of Earth]], where [[John-117]] utilized the armor effectively in vacuum combat. As well as being completely sealed, the armor can prevent the [[SPARTAN Program|wearer]] from burning up in a planet's atmosphere. Later in the [[Battle of Earth]], Spartan-117 fell through the [[Earth]]'s atmosphere into the jungle of [[Kenya]], and survived, although he did use a part of the [[Forerunner Dreadnought]] as a heat shield.<ref>'''[[Halo 3]]''', campaign level ''[[Arrival]]''</ref><ref>'''Halo 3''', campaign level ''[[Sierra 117]]''</ref>

===ODST armor===
The most common version of the [[ODST armor|suit of combat armor]] worn by the [[Orbital Drop Shock Trooper]]s is fully vacuum-sealed and includes oxygen reserves for 15 minutes.<ref>'''Halo: The Cole Protocol''', ''page 56''</ref> However, some variants of the armor leave the neck and fingers exposed and are thus not rated for vacuum operation.<ref>'''Halo 3: ODST'''</ref>

==Covenant==
The [[Covenant Empire|Covenant]] also use vacuum suits,<ref name="Reach">'''[[Halo: The Fall of Reach]]''', ''page 310''</ref>  such as the blue-and-black suits worn by [[Kig-Yar Ranger]]s. [[Sangheili Ranger]]s and other special operations units utilize special vacuum-enabled [[Combat harness|Combat Harnesses]], such as the [[Assault Harness]], [[Flight Harness]], [[Ascetic Harness]] and [[Commando Harness]].

==Gallery==
<gallery>
File:VacMarinesFight.png|[[UNSC Marines]] fighting in vacuum suits.
File:Halo3MC.png|A suit of [[MJOLNIR]] armor.
File:MarineVacSuit.png|A [[UNSC Marine Corps|UNSC marine]] vacuum suit.
File:Reach UNSC Marine - shin guards.png|A UNSC Marine in a 2552-issue vacuum suit.
File:Bodysuit.png|Spartans outfitted with black body suits.
File:H3 - ODST.png|A suit of [[ODST armor]].
File:Jackal Rangers.jpg|Kig-Yar Rangers in vacuum suits.
File:H4SangheiliRanger.png|A Sangheili Ranger in a vacuum suit.
</gallery>

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

[[Category:Protective clothing]]
{{Armor|Human}}