Roosevelt military base
From Halopedia, the Halo wiki
Roosevelt Military Base was an UNSC Military facility near the Outer Colonies. Roosevelt Military Base was noted to be in the vicinity of a Black Market Bazaar, but forces there were unable to successfully end the operation. The Bazaar was finally shut down by the Spartans, a "cover" mission performed in order to inconspicuously bring the Spartans closer to the Damascus Testing Facility and receive their highly secret first set of MJOLNIR Armor
