host: with us next is kevin baron, executive editor of defense one. are here to talk about not just what is currently going on, the use of federal troops, but the history of federal forces in quelling unrest across the united states. your thoughts on what you have seen over the last few days with the federal troops, national guard, other law enforcement units gathering strength in the nation's capital? guest: gathering strength is a good way to put it. it is most extraordinary. for a lot of us who lived in washington, we are used to seeing security forces and motorcades in secret service. even some military. i have never driven through the city, block after block traffic is stopped and cordoned off by military humvees and desert brown patterns. it is striking. it has revealed a new set of questions, not just about trump, but about -- about the race question and the process, but about the use of the military. the unique relationship between the military and the civilian politician to control them, and the difference between active-duty troops versus na