Oliver kept his gaze on Eithan, steeling himself against the confusing mix of emotions that he was now experiencing. "Good," he said at Eithan's promise to be careful. He knew that, in the given situation, that was the best assurance he could get. He decided he'd have to watch for Eithan on the Plane and see if he could find out what had happened as soon as it was over. He doubted he'd be able to do anything about the result, but...well, hopefully it would be good news. It didn't bear thinking about otherwise.

And with that in mind, at Eithan's laugh and answer to his last question, Oliver gave him a real smile back. "I'm gonna hold you to that!" he declared, grinning. "Let me know how it goes."