Despite himself, he laughs. The laugh is brief, breathless, and hollow, but it's a laugh nonetheless. Here she is, hurting, bleeding, and possibly dying, but she's still taking the time to apologize for the mess.

"Don't worry about that," he says quickly. "These are government issue, see? Nothing that came out of my own pocket."

Cas continues to move, doing his best to balance speed with caution, while scanning the street and darkened cityscape for signs of the hospital. He thinks he sees it, just a little ways off in the distance, but he can't be too certain.