One constant in this world is change. Today we'll talk about some of the change we're experiencing now. After 20-year occupation, the US is removing all remaining troops from Afghanistan. The exit was ugly, but they have been, throughout history. We'll start with what's happening now in Afghanistan. While many veterans, politicians and media figures are pointing a finger at Joe Biden, Lucas Kunce isn't. The Iraq and Afghanistan veteran who's running for Senate from MO returns to the show today after pushing back at some of the loudest voices blaming the president and the American people. Then we'll get some historical perspective from David Potter, author of the new book "Disruption: Why Things Change" which looks at what precipitated radical change throughout history.