For some the Great War never ended. All manner of Covenant hardliners still seek to end humanity just as humanity plots against their erstwhile neighbours. Terrorists plague many outer colony systems and anywhere bordering the frontier is at equal risk. In forgotten outpost just inside the Frontier, one such terrorist plots his revenge. Rahs had to give the creature credit, he had lasted a lot longer than his last subjects. Clearly culling from the military stock yeilded better specimens.