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- Pawel Czernek enters active service with the UNSC Marine Corps.
- Concord is attacked by the Covenant; the Venator MJOLNIR variant gains prominence in the attack.[1]
- Gray Team is deployed on a mission against a Covenant facility within humanity's former territory.[2]
- The Battle of Meridian takes place. Meridian is glassed and Chalybs Defense Solutions facilities on the planet are abandoned. The Covenant discovers a Luminary on Meridian that leads to Earth.[3]
- January 17: UNSC artificial intelligence Iona begins service.
- February 19: The SPARTAN-IIIs of Gamma Company begin their week-long augmentation process on the UNSC Hopeful as part of Project CHRYSANTHEMUM.[4]
- May 8: Dr. Catherine Halsey undergoes the Hemley & Aubourn Behavior Analysis; the results make ONI increasingly wary about her reported unreliability.[5]
- November 24: Mark V[B], the initial production model of the Mark V MJOLNIR armor,[6] enters service.[7]
- December 22: The Car & Pilot Magazine releases its December 2551 Edition. This includes a review of the new 2553 edition of the Civilian "Hog".[8]
Sources
- ^ Halo 4, MJOLNIR/Venator armor description
- ^ Halo Waypoint: Catalog Interaction
- ^ Halo 2 Anniversary, Terminal 1
- ^ Halo: Ghosts of Onyx, page 101
- ^ Data Drop 3
- ^ Halo Encyclopedia, page 94 (2011 edition)
- ^ Bungie.net: Bungie Weekly Update, 1/29/10
- ^ Bungie.net: AMG Civilian Hog Review