In Response To: The final fight in Halo 2 (Army Fork)
: I just thought of something, could it be delta halo would not actually fire
: as they suspected? if it was, gravemind would have sent every flood he had
: to every spot where there could be a threat of halo activation to stop
: them from firing. But in the final fight between the arbiter and Tartarus,
: there are no flood present. They didn't need to go, because all that they
: knew would happen is that it would just fire the pulse, and the ark would
: be activated for it's firing. It could fire, but gravemind already knew so
: much that he wasn't worried about what other percieved as the threat of a
: halo activation. He used the Arbiter and the Chief's belief it would
: activate to spur them into action.
Except Sparka nd Cortana indicate that by activating a Halo you activate the weapon and cause mass sentient death.
Not to mention that Spark says outright that the pulse fires in case of unexpected shutdown.