There was a battle going on, and the heroes, such as Katsuki, (who’s 22 like Hawks), and Hawks, plus some of the others, told the students in each class not to get involved, and Katsuki told the class the same thing. Although, at some point, during Katsuki’s battle, one of the Nomu managed to pin him down, while holding his arm, and they could here him grunting a bit, before he let out a yell, as a loud crack was heard, likely his arm being broken, his eyes watery, but not crying, though very clearly in pain, while Izuku, Todoroki, Denki, and Kirishima are about to run in to help him.