Literally the best part of the game. Halo 3 ODST unlike almost all games isn't afraid to make the player seem weak. It's dark and lonely while instruments like the saxophone fill the soundtrack, it's atmospheric and unsettling. Rookie is alone in the aftermath, he's the last to wake up and has to piece it all together. I personally think it is the strongest showing of atmosphere in the entire Halo series outside of parts of Halo 2 Anniversary.