Home Videos GovCon Leaders VIDEO: Mattis Speaks at AFA ConferenceVIDEO: Mattis Speaks at AFA ConferenceNicholas HoffmanSeptember 21, 2017GovCon Leaders,Newshttps://www.youtube.com/watch?v=dYXMxB-XYNMDefense Secretary Jim Mattis delivers the keynote address at the Air Force Association’s Air, Space and Cyber Conference in National Harbor, Md., Sept. 20, 2017.Video of the Day