This may be sound stupid but throughout all of these terminals the time frame is a bit jumpy. The one in AotCR shows guilty spark obseving a crashed ship and he later makes a tomb for it. What race of ship was that and when did it occur?
hey 400th post 
I was wondering that too. At first I assumed it was the Pillar of Autumn because I was half watching, then I saw it didn’t appear human in origin. I wonder if that could be a hint to a possible enemy or ally in Halo 4.
I would say this is one of the many threads that will have connections to halo 4, this could be the new enemies