Apollo looks back to Will directly, smiling warmly as he comes to the vaccination conclusion. "And that's why it's not the worst power to inherit from me," Apollo explains. "I know why someone as kind as you wouldn't want the power to inflict disease, or the responsibility that comes with it. But with that power comes the opportunity to control its spread."

By vaccinations, like Will suggested, or with other methods — Though Will might not be in the mood to contend with strategically choosing where an outbreak starts to minimize the death toll. Apollo wasn't sure he was in the mood to really dig into that Trolley Problem, either.