[ Hiro's fists clench. There's likely nothing Cal can say at this point; nothing that will convince Hiro to let the ex-professor go. Except maybe a certain brotherly revelation, but that is a tricky, tricky subject anyway. ]

Plenty of time to talk about it back in jail. You --

[ And then he stops. Helmet jerking to one side as his mouth goes dry. He sees a familiar figure behind Callaghan, one he never thought he'd see again. His brother. ]