I'd make Noble 6 get on the Pelican with Keyes and kick all kinds of ass with Master Chief in Halo 1, 2 and 3. The Covenant Crusier that's on course to destroy the Pillar of Autumn which Noble 6 destroys when he stays behind would obviously forsee the major ass kicking team duo and shit itself then implode. That's how they both escape Reach.
He could teach Master Chief on how to do brutal assasinations and Master Chief could teach him how to fire a gun without recoil.








