Yamato tenses up as soon as Joe asks, because -- well, Barry may not have been angry at him, but he did still cause a whole lot of trouble for the city.

"S-sorry, that was, er -- that was me," he says stiffly. "We were running some tests, and the MRI scan freaked out the thing that gives me my powers. But I've got it under control again now, it won't -- it won't happen again."