"I definitely don't believe that," Barry replies to Yamato, trailing behind him and Caitlin. "But if that's the case, then you're middle-aged right now."

Which makes Yamato the old man here.

Caitlin heads across the room to check over the machine, tutting at she works.

"Given what a big help you were here, and what Barry's said about you and your friends in your world, I would hope you live well beyond that, Yamato. The world-- worlds really need someone like you around."