My friend left the fire team because we were trying to glitch the confluxes so we didn't have to do them, so all the sudden a random shows up thinking he's all hot shit and i went to boot him and by accidentally gave him fireteam leadership! Believe me I felt pretty stupid. I asked him to give me leadership back and to leave because my friend who wanted to play couldn't join. He gave me leadership but refused to leave saying that he had the right to stay and play, despite randomly joining. He wasn't there for much longer.