Official records show that the Battle of Circinius IV, which resulted in the glassing of the planet and the annihilation of the entire population save for three cadets of the Corbulo Academy of Military Science, took place in the year 2526. Kelly-087 and Fred-104, along with the rest of the SPARTAN-II candidates, were born in 2511, making them fifteen years old at the time.
"They let me pick. Did I ever tell you that? Choose whichever Spartan I wanted. You know me. I did my research. Watched as you became the soldier we needed you to be. Like the others, you were strong and swift and brave. A natural leader. But you had something they didn't. Something no one saw, but me. Can you guess? Luck."