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This document contains sensitive information. Unauthorized access or disclosure is punishable by death.
It is presented as the personal notebook of Dr. Catherine Elizabeth Halsey, the creator of the Spartan-II program. The book is a facsimile of her notes, sketches, and memos spanning several decades of her research, from the initial selection of Spartan candidates (like John-117) to the fall of the planet Reach.
This digital version is essential for fans because it includes the "missing pages"—two specific entries that Halsey "tore out" of the physical book in the lore. These pages detail a dangerous experiment regarding loading an AI into Slipspace, a concept she deemed too volatile to preserve.
As I close this journal, I can hear the medical staff rushing to attend to one of the recruits. I hope it's not too late.