Andrew, Tom, and Carl discuss last night’s presidential debate and its impact on the 2024 election. They also talk about the performance of ABC debate hosts David Muir and Linsey Davis and whether the two candidates will agree to a second debate. Plus, the 23rd anniversary of the 9/11 terrorist attack on the US and whether the national unity of that moment can be recaptured in today’s era of fractious politics. Then finally, Andrew Walworth interviews national security expert Thom Shanker, author of “Age of Danger,” about 9/11 and how it shaped America’s response to terrorism and other security threats.