Maybe Chief's armor is "Broken"? Maybe that's why he has the cloak. His visor is cracked also. I really hope the Didact isn't returning...there's much speculation that he will. The "Bird", is obviously Forerunner, but the question is, Is it Promethean? The Prometheans were VERY fun and challenging, so I hope 343 isn't done with them. But, then again, it would be very awesome to see yet ANOTHER enemy! One thing I noticed about the trailer........Chief had Cortana's' chip, but, wasn't the chip in a Forerunner Terminal when Cortana died? I mean, how else would she be in the system! And the terminal, was destroyed by the Didact, so how did Chief recover the chip? I doubt it would've survived the detonation of the nuke, and if it did, Chief would NEVER find it in all that debris! But, I love the fact that he has it on a chain....that makes the Halo series seem a lot more, " Personal", for some reason...I love the robe, and the desert in the trailer, it makes it seem as if the world was destroyed or something.....And another thing, those, "Spikes", in the desert landscape, look familiar....weren't they in Halo 3? I remember them from the Halo 3 Menu.....Maybe Chief is on a fragment of the Ark?
Or were those spikes on earth? I can't remember....been ages since I played Halo 3....Anyways, AMAZING trailer! I cried when I saw it, I wasn't expecting to see Halo 5 AT ALL!!!!!!!!!!!!