David Brancaccio's Tuscany trip invite

TSA agents are missing their first full month of paychecks as a result of the partial government shutdown. In response, CEOs of major U.S. airlines have written an open letter urging Congress to fund the Department of Homeland Security and end the shutdown, which has dragged on as Democrats demand reforms to immigration enforcement practices. Plus, how might emerging technologies like AI amplify global threats, such as nuclear war?