Each week, Guy will be hosting brief online conversations with founders and members of the How I Built This community about how they're navigating these uncertain times. This past week, Guy spoke with two former guests: David Neeleman of JetBlue Airways, and Tristan Walker of Walker & Company. David described how Azul Airlines, his Brazil-based company, has been directly impacted by the COVID-19 crisis, and Tristan explained how he's innovating from home.