"That was a gun," the Balladeer replies, apparently unsurprised and very deliberately not turning to look towards the commotion outside. Maybe if he ignores it, this will be less likely to backfire. "They're...it's a weapon, they fire little metal slugs very fast. Faster than a car."

Should he have explained that before Booth showed up, doubtlessly carrying a gun? Oh well. "It's over now No one's died out there," he assures her. "They'll all survive."