 And he specializes in post-traumatic stress disorders. And I want to really talk about this at length, not just Biden, but really about the book and about PTSD in general, because I think there's so many segues to different things here. Dr. Tim Murphy, welcome, sir. It's great to be with you. Thanks for having me on. You bet. So, obviously, I'm sure you've seen the debate. You've heard the clips. You've seen them on social media if you're watching.