This may have happened to other people & perhaps it's a common occurrence that I've just never experienced in the Crucible. I loaded in with one mate on my Fireteam & we got put on opposite teams... What followed was a hysterical display of viciousness, where we tried to take each other down as many times as possible & killing anyone who got in our way. Which I feel is the natural order of things: Kill your friends, kill them dead. Private matches for the win! Please Bungie?