I'd hope to see them join, I'd like to think 343 is trying to do that with them updating the books to make somethings make more sense. In the second book MC talks about it being weird fighting by himself he always had Kelly and Fred, then he got used to having Cortana *Spoilers* and maybe now that he is alone again after being in a 'relationship' for the past couple years they will give him another type of back-up we as gamers aren't used to with MC. *Spoilers end* And then in the Limited Edition it has Thorne's book where he talks about the Air Force separating from the Army, and who became their Chief of Staff. I'd like to think it's a hint 343 put in where they are going to have the Spartan's become something more, with MC at their head? * Spoilers* I mean the whole room stopped when he walked in the room even Demarco (or I think it's him.) fell of the treadmill. *End Spoilers*