- Dr. Halsey, while still interred within Ivanoff Research Station, analyzes the Composer found on Installation 03. She manages to develop an extremely accurate theory as to its purpose based on its similarity to the UNSC A.I. Matrix Compiler which she developed.
- The Halo 4 variant of the UNSC Warthog begins production.
- The Budgetary Retention Hearings take place.