Castiel watched with some measure of fascination. He was unsure as to how Bruce would react to what Mina was and, frankly, he was ready to defend her if he needed to. Mina had helped him look for Sam. He felt that he owed her for that and furthermore, he liked her.

He was relieved at the subdued reaction Bruce seemed to have. "No one here should be dead, save perhaps myself." He'd known too many bad angels and at least a few good creatures who shouldn't have been. He might even consider himself among the bad angels, if he thought about it too much. He tried not to.

And then, because he had a feeling what Bruce might be thinking, "Mina and I are not cut from the same cloth, though. I do have a pulse."