Installation 07

Installation 07, also known as Zeta Halo, is one of the seven Halo rings.

On November 3, 2552, during the Battle of Installation 05, a signal was sent to this Halo from Installation 05, putting the former - as well as the entire array - on standby mode. Installation 07 was then ready to fire on demand. Later the same year, during the Battle of Installation 00, Installation 00 was still on standby. However, SPARTAN John-117 deactivated the Halo array before it could be fired, rendering Installation 07 inert.