Those Jet-Packs on his suit, yea.... About those, in Reach, noble six was a spartan 3, a later generation so they get the armor abilities. But, Jorge was a spartan two, and he has abilities too, so why doesn't Master Chief in Halo 1? (Later game= spin on the plot and story. Thanks Bungie!) And anyways, the ship Forward Unto Dawn could have been carrying the upgrades and he had time to put them on before climbing into his cryopod.
I don't know, your guesses are as good as mine.