From Halopedia, the Halo wiki
Possible Airlock doors?
I don't know if everyone else has made this observation, but it looks to me as if these "hardpoints" might also be some kind of ship-to-ship docking mechanism, an airlock door of some sort, for transfer of material and personnel between two docked starships linked by these hardpoints. Is there any further information that may suggest that these are also airlocks? I mean, what an airlock would look like externally, looked at from the outside? I do know what an airlock door looks like from the interior, but what I want to know is are the hardpoints what airlock doors look like from the outside? --Xamikaze330 16:05, 13 February 2012 (EST)Xamikaze330