 Oh, yeah. So he creates this vaccine for Japanese encephalitis, which is this horrible disease that causes brain swelling and had been killing people in Asia for a really long time. And then the army asks him to develop a vaccine so that soldiers don't die of it when they're there. They're not affected by it. And he does. And that's the first vaccine that he makes. Does he do the Hong Kong thing when he's in the army? I think he does. In late 40s, institutions monitor strains of influenza.