HAZOP-class Mjolnir

"Some operations are considered hazardous even for a fully armored Spartan"

- Description of the HAZOP helmet.

HAZOP-class Mjolnir (Hazard Operability), is a MJOLNIR Powered Assault Armor, is a MJOLNIR armor variant originally designed by the Materials Group, with the GEN2 version being manufactured by Acheron Security.

GEN1 information
Two upgrades are availible for the helmet, the first adds a Chemical, Biological, Radiological, and Nuclear Module with a Hardened Uplink Module on the right side (CBRN/HUL), and the second adds the unnamed attachment similar to night vision goggles found on the Operator variant with a Command Network Module on the left side (incorrectly called a CNM-I, the correct title being (unknown)/CNM).

The HAZOP armor also includes a shoulder piece. It is about the size of the FJ/PARA shoulders and is shaped like a curved "H".

GEN2 information
It was developed by Acheron Security. When its contract was transferred from the Materials Group, Acheron Security re-architected the GEN2 HAZOP-class armor systems explicitly for extended operations within exotic and environmentally hazardous locales. Templates for the GEN2 were acquired by Acheron Security in 2553, where a number of advances were engineered to enhance protective operability during EVA deployment while outside a vehicle in slipspace. The armor contains redundant oxygen filtration systems, modified rebreather caster lines, and the most advanced radiation shielded underarmor mesh currently in production by the UNSC.

Helmet characteristics
Some operations are considered hazardous even for a fully armored Spartan. Base price: 7,000 cR, Recruit CBRN/HUL price: 2,000 cR, Sergeant CNM-I price: 1,000 cR, Captain
 * Description: Mk.V helmet variant for use in hazardous environments
 * Description: For operations in extremely hazardous environments; hardened uplink module.
 * Description: Command network module-Improved; upgraded variant of the standard issue CNM unit.

Pauldron characteristics
Shoulders price: 500 cR(per shoulder), Recruit
 * Description: Some operations are considered hazardous even for a fully armored Spartan.

Halo 4
Unlock: Achieve Spartan Rank 43 Available skins: FRST(Forest)
 * Description: Manufactured and battle-tested just outside of the city of Gdynia on Mars.
 * The FRST skin was a pre-order bonus though Gamestop. It is also available in the Halo 4 Game of the Year Edition.

List of appearances

 * Halo: Reach
 * Halo 4
 * Infinity Briefing Packet
 * Halo: Escalation