since we are getting closer to modding and noobs are going to come here looking for programs to mod and tuts to mod, i think it should be very easy for them to find them suggestion is either halo 3 modding tuts section or halo 3 modding programs section that includes explorer 360 ...
i think its on the last level there is grunt that is like suicidal or something, another is on the map that looks like rats nest if you walk to the end oyu aren't supposed to there is a guy at a door yelling at the person on the other side