Gen. Mark Milley retired Friday as the Chairman of the Joint Chiefs of Staff, a position he’s held for the last four years. He sat down exclusively with NBC’s Lester Holt to talk about the tensions before the 2020 election and concerns about any possible actions the military might take. See more Monday on Nightly News. » Subscribe to TODAY: on.today.com/SubscribeToTODAY » Watch the latest from TODAY: bit.ly/LatestTODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: on.today.com/ReadTODAY Find TODAY on Facebook: on.today.com/LikeTODAY Follow TODAY on Twitter: on.today.com/FollowTODAY Follow TODAY on Instagram: http:...