By the power of truth, I, while living, have conquered the universe.
Posted by: Bombsoldier
Posted by: ajw34307
The Flood were infecting the Ring, they would have been destroyed by Installation 04B tearing itself apart and then crashing into the Ark - causing catastrauphic damage in the process.
Chief isn't killed because Mendicant Bias redirects the portal, sending him to the Forerunners at Requiem.
Ah, i see. This makes sense. But how did Bias achieve this exactly? I'm sure he was destroyed at some point in the halo time line by his opposite self i'm not entirely sure haha.
At the end of the Forerunner-Flood war, Offensive Bias split Mendicant into two fragments. One was left on the Ark and the other on the Forerunner Keyship which, funnily enough, ended up on the homeworld of the Prophets and was later used as a power source for High Charity. Basically, part of the plot in Halo 3's Terminals is the two fragments of Mendicant Bias getting closer and closer together, restoring his mind which ultimately culminates in the final Terminal of the game where he's now 'whole'. He sacrificed himself in the end to keep Halo stable long enough for John to get to the Dawn and then send him to Requiem.
He seemingly hijacked the portal's systems during his time on the Ark so he had a degree of control over the destinations.
[Edited on 05.24.2012 1:59 AM PDT]