Defense Keynote Air Force Gen. Paul J. Selva, vice chairman of the Joint Chiefs of Staff, presents the keynote speech during a National Defense Industrial Association's breakfast for leaders in Arlington, Va., Aug. 10, 2016. Selva discussed several issues, including security challenges facing the nation and Defense Department innovation. DoD photo by Army Sgt. James K. McCann SHARE: Download: Full Size (0.54 MB) Credit: Sgt. James K. McCann VIRIN: 160810-D-SW162-0081C.JPG Photo Gallery