I'm still wondering to my self that when Master Chief blow up the Ring in the first game, you still see the Sargent Major in the second Halo in the tutorial mission of the campaign. In that mission he says to a marine that it is "classified" how he was able to get off the ring when the Chief destroyed it. Does Bungie every explain somewhere how he did it or did they just leave that a mystery for everyone to think about without getting any explanation?