[Calms down a bit now that the shouting is over. The lights return to normal and the tense way Cas held himself relaxes. Eyes fix pointedly on Dean.] You and Sam are the ones that matter to me. Here, in this place. [He knows it's selfish, but it's the truth. Shakes his head.]
Your safety is my first priority. I know the thought of Zelman attacking others while you stand idly by may be difficult for the two of you, but he can't be stopped. Not without grave casualties. [Hesitates.] You're both in the Defense Force, right? They might have solutions. As for now... remind yourself that Zelman never killed anyone.