2517

June

 * Jacob Keyes graduates UNSC OCS.

17th

 * Dr. Catherine Halsey and Lieutenant Jacob Keyes meet 6-year-old John on Eridanus II. John passes a test conducted by Halsey and is unknowingly accepted into the SPARTAN-II program.

23rd

 * Jacob Keyes is promoted to full Lieutenant by Dr. Halsey and is reassigned to the UNSC Magellan.
 * Seventy-five children are conscripted into the SPARTAN II program per Naval Code 45812 on Reach.

24th

 * The 6-year-old trainees awaken for their first day of training. They are led by Chief Petty Officer Franklin Mendez. They are introduced to Déjà.

25th

 * John, Kelly, and Sam become friends.