User blog comment:Ralok/Help from halo fans/@comment-160529-20100429014906

maybe master chief shut down the life support system with the scarab in halo 2

think about it no matter what point you are at on its path when you kill everyone the cutscenes shows you are at the same place

maybe it took the chief time to kill the scarab so it always ends up in the same spot when it is dead

(overanylization)