[Sman545]

I thought that she and the chief knew each other longer than what the game shows?

Reach = ~25 - 35 years before Halo 1.

I don't think it is Pirate, because at the end of the game, they have already found Halo, and HCE is about to start. Also AI's only have a lifespan of 7 years, that's why I'm scared that in the later Halos she will die.

Reach started in 2517, Halo 1, starts in 2552 ...

Yes, the war for Reach begins then, but the actual game begins in the same year Halo 1 starts. <!-- m --><a class="postlink" href="http://en.wikipedia.org/wiki/Halo:_Reach">http://en.wikipedia.org/wiki/Halo:_Reach</a><!-- m --> of course the war would have been longer, all the Spartans pretty much died in this war, so it would have taken over 30 years.