Castiel let out a sigh when she protested. He knew it was coming and right now he couldn't listen to her. He couldn't agree with her. He couldn't reason with her because there was no reasoning with Rose Tyler over things like this. She was a hero, but she was also so incredibly human. Castiel was human in all the right ways, but he still thought like an angel. He was still willing to make that ultimate sacrifice to help the world.

"Not an option." He said and straightened up. He looked at the scientist who made eye contact. He seemed to back out of the room without a verbal command. He'd give them a few, but Castiel didn't need a few. He was going to do this. He needed to do this if she was going to be safe. That mattered a lot to him.

"I'm right, Rose. The energy coming off my body will shut that tear. It will seal it up and you will be safe." He crossed his arms over his chest. "That's the decision. I'm doing it."