The guys have been on the ring now for well over a week now and the battle has concluded (see
Season 2 of The Halo CE Chronicles for details) The Fearless is breaking orbit to investigate a slip-space event at the edge of the system leaving behind a platoon of marines and scientists who are investigating a Forerunner structure and are out of contact (see episode 1 of
Season 3 Valley of the Forerunners). Gaia the controlling intelligence has made its decision on whether to intervene in their activities.