Horvath keeps his head down, studying the circle, because that's a good way to keep either of them from seeing his slightly sheepish expression.

"In case of emergency. It would be a way to reach us." He finally glances up at Balthazar, although he probably looks a little sheepish still. "You can't deny the Nexus has excellent resources... he's come this far."

He hands back the chalk and starts to lever himself back to his feet with the cane.