While Jamie wants to help, he's still not entirely sure what else he can do - the hand on the shoulder was pretty much about as far in advance as he had thought things through. But he does stay, not saying anything else while Billy collects himself. Finally, when the other man does speak, he nods.

"I understand." He's at a bit of a loss, himself. Finally, though, he has the glimmerings of an idea. "Ye worked with him, aye? I only met him the once. Ye could...tell me about him, if ye like?" He's referring to B5, and although he doesn't use his name, he does turn and glance out the window for a moment before looking back at Billy.