RJ wouldn't have expected Casey to be feeling only happiness, given what he went through. Sure, it was great that Casey was back, alive and seemingly well, but RJ knew Casey and he was fairly certain there was a lot going through his head.
RJ sat there, content with the silence. He'd spent many a day meditating in silence. He'd gotten used to it.
Hearing Casey speak, RJ turned to look at him. Usually Casey looked so confident, but now-- he looked scared. RJ's heart broke for him. "No, it wasn't," he answered softly, his face showing his worry. "We'll find it," RJ reassured him. If he had to, he'd build Casey a new one. It wouldn't be that much trouble, anyway.