(It was definitely true that whether it was Kaytoo who hit someone, or someone who hit Kaytoo, it was gonna be worse for the one who wasn't a security droid.)

The tones got where they needed to. Cassian went rigid, then limp, then his eyes opened. They darted around the room; he sat up and gave it another sweep; then he looked, blinking, at Kay. "What's up? Anything wrong?"