Editing Halo (Halo 3 level)

[[John-117]], [[Thel 'Vadam]] and [[Sergeant]] [[Avery Junior Johnson|Johnson]] make their way towards the [[Control Room]] in order to activate the ring using the [[Activation Index|Index]] from the first [[Installation 04|Halo]] encountered. However, the [[Gravemind]] sends [[Flood]] [[Flood combat form|combat forms]] (and later [[Flood pure form|pure forms]]), carried by [[Flood dispersal pod]]s, to try to stop them. After holding outside the Control Room for a while, [[343 Guilty Spark]] opens the door and they reach the Control Room. When Spark realizes that they are going to activate the unfinished Halo, which will destroy the Ark and the new installation, he fatally injures Johnson, who was activating the ring. The monitor then locks the Arbiter out of the Control Room and corners John-117. Just as Spark is about to kill the [[SPARTAN-II program|Spartan-II]], Johnson, barely alive, fires his Spartan Laser and damages the monitor. He then hands the weapon to John-117 and faints. The Chief, after firing three shots at the Monitor, finally kills the [[rampancy|rampant]] AI unit. He then says farewell to Johnson who dies from his injuries, and activates the ring with Cortana. Outside the Control Room, the Chief and the Arbiter battle their way to Johnson's Warthog and race their way to the {{UNSCShip|Forward Unto Dawn}}. After entering the frigate, the Arbiter heads to the bridge while the Chief uploads Cortana to a [[holotank]], and she proceeds to fire up the frigate's engines. The Master Chief, stuck in the cargo bay as they enter the portal, relaxes as the Halo fires and then explodes, killing the [[Gravemind]] and the Flood upon the Ark.