Okay so I've beaten this game countless times and understand the plot entirely except for one small detail. When master chief and cortana find the silent cartographer and head to the control room during the level "assault on the control room" where is captain keyes? I understand he is at the place where the level "343 guilty spark" takes place but how and why did captain keyes end up in the swamp in the first place? If the unsc's goal was to find the control room for halo, what was captain keyes doing in the swamp?
[Edited on 12.08.2009 8:27 PM PST]