It has come to my attention that while playing Halo 3 recently I have attempted to kill my Allies in Campaign, while doing so it appears that the CPU allies and My Friends playing cooperatively over Xbox live Die with the equal amount of damage put to each other, However when I murdered my whole squad it seemed that the only CPU remaining was The one and only Sargent Johnson, when I first attacked him he seemed to not take damage but I then realized he was invincible, soon I tried to find different ways to kill him too but I never got the chance to do so. When ever I was in the process of trying to kill him he killed me with One shot of his Gun and It has come to my attention that this is a major problem that affects us Halo Players and must be Fixed Immediately I expect big things Bungie. Please Fix this issue for The Halo 3 Anniversary Edition in the Master Chief Collection.