Halo: The Fall of Reach, Bootcamp, Issue 1, by Marvel Comics
The battle over Eridanus II during Operation: TREBUCHET in 2513 and the rebels' escape from the planet. The story then jumps four years forward, as the shuttle Han arrives in the Eridanus system with Dr. Catherine Halsey and Lt. Jacob Keyes onboard. In Elysium City on Eridanus II, they observe the boy who will later become John-117.
A month later, the Spartan conscripts, having each been kidnapped and
brought to Reach, are rounded up as Halsey tells them of their
conscription to the SPARTAN-II project. Later, Halsey is seen drinking
in her apartment, when she receives a message from Vice Admiral Ysionris Jeromi, regarding the risks involved in the planned SPARTAN-II augmentation procedures.
