CBRN module
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 The CBRN module (right) with a Command Network Module (left). The CBRN module, short for the Chemical, Biological, Radiological and Nuclear module, is an external attachment for several MJOLNIR Mark V and [GEN3] helmets.[1][2] ContentsOverview[edit]Specifications[edit]CBRN modules are typically filter attachments worn externally on the "mouth" area of helmets.[3] Usage[edit]The CBRN modules are employed for operations in hazard zones, wherein chemical, biological, radiological and nuclear threats are present.[4] Known modules[edit]The CBRN module has four observed modules, each with its own distinct physical appearance.  The MK55 on the Commando helmet. MK55[edit]Manufactured by Imbrium Machine Complex, the MK55 module is a filter attachment used during extended operations in environments contaminated by chemical agents, radionuclides, and biological hazards.[3] The MK55 module has been observed to be compatible with the following helmets:  The MK59E GLANCE module on the Aviator helmet. MK59E GLANCE[edit]Manufactured by Imbrium Machine Complex, the MK59E GLANCE module is designed for hazardous operations in the tainted atmosphere of damaged space station and warships. The MK59E GLANCE module has been observed to be compatible exclusively with the AVIATOR-class Mjolnir helmet.[9] EOD-style module[edit]This EOD-style module is a pair of filter attachments on either side of the helmet. It is employed on the standard Mark V EOD-class Mjolnir helmet, but it could be removed for other helmet attachments.[10] This module has been observed to be compatible with the following helmets: AKIS-style module[edit]The AKIS-style module was developed in parallel to the AKIS helmet, and has only been observed as compatible to the AKIS helmet.[12] Gameplay[edit]The CBRN modules serve as cosmetics and have no impact on gameplay. Halo: Reach[edit]Two of the CBRN modules are available as attachments on several helmets in the armor permutations of Halo: Reach. The device is priced at different levels of Credits, depending on the base helmets. In Halo: The Master Chief Collection, the same CBRN-attached helmets are unlockable in Season 1: Noble, while the AKIS-style module added in Season 5: Anvil.
Halo 5: Guardians[edit]A CBRN module is featured on the EOD GEN1 helmet, which is one of the helmets that could be acquired through the Classic Helmet REQ Pack in Halo 5: Guardians . Halo Infinite[edit]CBRN module attachments are available as customization options in Halo Infinite. Mark V [B] core[edit]
Mark VII core[edit]
Production notes[edit]"CBRN" stands for chemical, biological, radiological, and nuclear, and is pronounced "C-BURN". It is the same abbreviation used in real life, hence its association with the HAZOP armor permutation. Gallery[edit]
List of appearances[edit]
Sources[edit]
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