Has anyone noticed that after re-watching the original announcement trailer that it might be after the events of the latest two trailers?
It seems unlikely that the chief needs a cloak in the harsh conditions with his armour unless it has been damaged (see new Locke trailer) and therefore not functioning properly.
Also you never see his arm the entire trailer, 343 may have done this to hide plot elements from the original trailer.
the chief appears to be dragging his shoulder forward whilst walking in the first trailer though this could be me reading too much into it and just walking against the desert storm and up hill.
finally this would suggest that the Chief escapes or is let go after getting injured. Either way its all speculation and just something I was considering. Any thoughts?