 Good evening, Alex. President Biden spent nearly a week hunkered down at Camp David, the presidential retreat in the mountains of Maryland, with his senior advisors from the campaign and the White House. We're told he was doing policy review sessions. He was working on memorable lines, trying to get some zingers that he could land against Donald Trump. He was also holding mock debates to practice what 90 minutes will be like tonight against Trump, standing at a podium to work on a debate. Now, Alex, the Biden campaign is looking at tonight as an opportunity