From Halopedia, the Halo wiki
2518 was a year in the 2510s in the 26th century.
- Dr. Catherine Halsey reviewed Kurt-051's progress noting he was good at bonding with his team. The review contained a image a battle in 1066 that Kurt drew.
- Dr. Catherine Halsey makes an entry in her journal wherein she identifies four Spartan-IIs that she and Franklin Mendez agree are the best candidates for leadership out of all the children in the program. Those four are Kurt-051, Jerome-092, Frederic-104, and John-117. Mendez is leaning towards Kurt but Halsey is confident that John is the best choice.
5 months after September 2517
- Doctor Catherine Halsey summons Jai-006 and Adriana-111 regarding their escape attempts and manages to convince them to say by saying that she offers them a family in the form of the Spartan program.