2 guards outside Weylands room in Prometheus

Mork
MemberOvomorphDecember 30, 20164259 Views10 RepliesNew here! Alien movies have been fascinating me since I saw Alien way back in 1979. Recent trailer, some unclear things in Prometheus and comments from Fassbender today forced me to finally signup and ask the following:
Reading Fassbenders statement "as far as we know" makes me wonder, what happened to the 2 guards standing outside Weylands room as Vickers enter appr 1hr 33 mins in Prometheus movie ? I don't see them as a part of the team entering the Juggenaut, so I suspect they were left in the ship, or in the truck ?
Could these guys have survived in the lifeboat being hidden somewhere? Were they forgotten by Janek and killed in the crash ? (Maybe discussed before, but I have not seen it)
Could there be alive Engineer's in the final departing ship. It now appears Shaw and David were not alone, or is it just a fake statement from Fassbender ?
Another question, how does David know which planet in the 3D starmap that were the Engeineer's origin ? Hi mentioned that he believed he could take Shaw there using another ship, but they could have ended up somewhere else ?
The broken statue in AC indicates a connection to the Engineer's homeworld though.