In the Thursday War, its stated that huragok(Engineers) are on the Infinity, and are responsible for a lot of the advancements they have. Where are they in Halo 4?
I may be answering my own question here, but maybe in the 3rd book in the trilogy, something happens to the huragok, killing them?
[Edited on 12.09.2012 12:14 PM PST]
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I don't know if you have seen the Infinity. It is pretty damn big. Just because we haven't seen them doesn't mean they're not on board.