The Kansas City Chiefs briefly fought at training camp practice on Sunday. I wasn't there to see it but the description from others sounds like most camp fights: a brief explosion of anger, a couple of punches thrown and then everyone jumps in and breaks it up. It's almost like a baseball fight -- except in football, they sometimes actually land punches (hello, Edinson Volquez's missed haymaker).
I can't remember more than maybe one fight in the last five years since the Chiefs have been at Missouri Western. I see fights as a good thing (assuming they're under control) because that type of competitiveness is what you want out on the field.