https://www.youtube.com/watch?v=NPu-li_NQ7A&t=26s Summary Open or closed? That is the debate taking place across the United States, as different governments consider when to lift their restrictions. We’re taking you to South Korea to see how it’s identifying and tracking coronavirus patients, though the technology comes at the cost of privacy. And we’re showing you how a CNN Hero’s organization of veterans is once again answering the call to serve.