AIR ASSAULT-class Mjolnir

AIR ASSAULT-class Mjolnir, also designated as the MJOLNIR Powered Assault Armor/AA variant, is a MJOLNIR armor variant originally designed by Ushuaia Armory, with the GEN2 version being manufactured by the Naphtali Contractor Corporation.

Specifications
The GEN1 Air Assault helmet offers key advantages during airborne deployment scenarios. It has specialized optics that can provide real-time satellite imagery and enemy signature allocation.

Development history
Air Assault was developed for use by UNSC Army airborne units. It was designed as an improvement to the ODST helmet and was heavily influenced by Ushuaia's previous work on the Marine Corps BDU.

In 2535, after being tested at Ushuaia's Siófok Firing Range, the Air Assault helmet was introduced as a variant of the Mark IV MJOLNIR armor and was also adopted as the standard helmet of the UNSC Army's airborne division. In late 2551, the helmet was upgraded for use with the Mark V MJOLNIR system.

After the first wave of GEN2 systems, based on requests of veteran Spartan-II and Spartan-III operatives, the UNSC Ordnance Commission considered reassessing a refined and upgraded version of the Mark V version of this suit. This led to the creation of the INTRUDER-class Mjolnir.

Usage
Spartan Kat-B320 of NOBLE Team wore a Mark V AA helmet during the Battle of Fumirole and the Fall of Reach. During the Battle of Earth, ONI deployed security personnel with the Air Assault armor to prevent Covenant forces from gaining control of the skyhook defense complexes above Earth and Luna.

Specifications
The Air Assault helmet's superficial design remained largely unchanged during the transition from GEN1 to GEN2. The GEN2 Air Assault helmet is equipped with a long range integrated comm network.

The new pauldrons seem to have succeeded the GEN1 FJ/PARA in design and function as they have a low-drag pauldron system. The chest has a locking retrieval brace.

Development history
After the Human-Covenant War, the Naphtali Contractor Corporation began manufacturing the GEN2 version of the Air Assault helmet, as well as the matching torso armor and shoulder pieces. It was tested in the Buffalo Breaker Yards, and the Cascadian city of Mindoro.

Air Assault met all of the UNSC Ordnance Commission strictures for ground combat.

Usage
GEN2 Air Assault provides functional support across a number of colonies as well as remotely deployed combat units. This set is also primarily used by ONI security personnel on the skyhooks above Earth and Luna.

The helmet is popular among Spartan fireteam leaders due to its communications system, though Napthali continues to market the helmet to the UNSC Army. Offshoots of the Air Assault armor have also been considered for adoption by unaugmented Delta-Six Division operators, but larger-scale adoption of the system has been hindered by its high cost, with each suit costing as much as a dropship.

Halo 3 MCC
In the Halo: The Master Chief Collection version of Halo 3, the Air Assault variant was added as part of Season 5 content. With the updated Halo 3 armor customization options, the players can now fit their Spartan with Air Assault helmet, chest, shoulders, forearms and legs. The description of the armor pieces are the same for every set. Unlock: Unknown
 * Description: A favorite of Spartans tasked with assisting Anvil Station security personnel.

Halo: Reach - GEN1
The MJOLNIR/AA variant was developed as an improvement of the venerable ODST helmet. Base cost: 15,000 cR, Warrant Officer UA/CNM cost: 7,500 cR, Warrant Officer FC-I cost: 5,000 cR, Warrant Officer
 * Description: Entered service in 2535; the MJOLNIR/AA variant is exclusive to Army airborne units.
 * Description: Up-armored varient with command network module
 * Description: Command network module-Improved; external hardened uplink. A favorite of Pathfinder units

Halo 4 - GEN2
Available skins: Verge (VERG) and Vision (VISN) Default unlock: Achieve Spartan Rank 11 Verge unlock: Complete the Vehicle Mastery commendation. Vision unlock: Purchase the Champions Bundle. This is not usable in Spartan Ops.
 * Description: Primarily used by ONI security personnel on the skyhooks above Earth and Luna.

MCC descriptions

 * Helmet description: Primarily used by ONI security personnel.
 * Shoulder description: Modular left/right spaulder from Air Assault-class armor.
 * Chest description: Well-suited for missions in microgravity.

Halo 5: Guardians Multiplayer Beta
In the Halo 5: Guardians Multiplayer Beta there was a "DPT" skin which became the "Disrupt" skin in the final game. This skin had descriptions for it as follows:
 * Helmet description: This coating incorporates impregnated metamaterials that mask the AIR ASSAULT armor's signature in both the near-infrared and near-ultraviolet spectrum.
 * Body description: AIR ASSAULT users take advantage of even the smallest tactical advantage to avoid being spotted in transit to the combat zone.

Halo 5: Guardians - GEN2
Available skins: Disrupt, Impact, and Specialist Default unlock: Common REQ card Disrupt unlock: Uncommon REQ card Impact unlock: Rare REQ card Specialist unlock: Ultra Rare REQ card
 * Helmet description: The AIR ASSAULT helmet's long-range comm system makes it popular with Spartan fireteam leaders, but Naphtali also markets this helmet to Army special forces.
 * Body description: AIR ASSAULT spin-offs were considered for adoption by unaugmented Delta-Six operators, but each suit costs as much as a dropship.

In Halo 5: Guardians due to the "Body" having a predefined customisation this armor set permanently has the following parts from Halo 4:
 * Body: Air Assault
 * Shoulders: Air Assault
 * Forearms: Ricochet
 * Legs: RG-63 Counter

Trivia

 * The Air Assault helmet, (especially the GEN2 version), closely resembles the helmets worn by Orbital Drop Shock Troopers in Halo 2. The most prominent similarity is the faceplate, which is much less rounded than the version of the ODST helmet seen in post-Halo 2 media.
 * The GEN2 Air Assault chestplate closely resembles that of the MJOLNIR Mark V, the [B] Variant specifically, and the similar Mark IV variant worn by Gray Team.

List of appearances

 * Halo 3
 * Remember Reach
 * Deliver Hope
 * Halo: Reach
 * Halo 4
 * Halo: Initiation
 * Halo: Hunters in the Dark
 * Halo 5: Guardians
 * Halo Mythos
 * Halo: Official Spartan Field Manual
 * Halo Infinite