Halo Alpha
Halo Alpha

The Beta-5 Division Ordnance Testing Facility, also known as Ordnance Testing Facility B5D, is an ONI Beta-5 Division installation in the Swanbourne, Perth district of Western Australia.


The facility's personnel designed and tested the Scout[1] and Recon variants of Mjolnir Powered Assault Armor/Mark VI.[2][3][4][5] Previously, the facility had jointly developed the Operator variant of Mjolnir Powered Assault Armor/Mark V with Chalybs Defense Solutions.[6][note 1]


  • Facility B5D is also the name of a Bungie.net group and separate forum. The group is based around the Recon armor permutation, but participates and organizes other events not about Recon.
  • It is possible that this facility is a subtle reference to the Australian Special Air Service Regiment, an elite group dedicated to reconnaissance and counterterror operations.



  1. According to the Armory in Halo: Reach, the Operator armor was developed at the Beta-5 Division Ordnance Testing Facility. According to Halo: The Essential Visual Guide, the armor was developed by Chalybs Defense Solutions and was tested at Chalybs' Testing Preserve. The article assumes that the two organizations jointly developed the armor.


  1. Halo: The Essential Visual Guide, page 165
  2. Halo: The Essential Visual Guide, page 152
  3. Halo Waypoint: MJOLNIR Project 2
  4. Halo 3 - Description: Mark VI Scout and Recon Armour
  5. Halo: Reach - Description: Scout and Recon Armour
  6. Halo: The Essential Visual Guide, page 133