Sector Six
From Halopedia, the Halo wiki
Sector Six was a location on Earth.
Orbital Drop Shock Troopers Bravo-21 and Bravo-22 were ordered there during the Second Battle of Earth to get medical attention from a UNSC medic at that location. The ensuing battle, the Battle of Sector Six, met with heavy casualties on the behalf of both UNSC Marine forces and Jiralhanae forces.