An unmanned aircraft system is seen on the flightline at Naval Base Ventura County and Sea Range, Point Mugu, Calif., July 31, 2015. The UAS was part of Black Dart 2015, a DoD-sponsored demonstration, July 26 to Aug. 7, that included industry personnel and participants from four military branches to assess and improve technologies, tactics and techniques used by DoD and its partners in countering the threat of UASs. (DoD photo by Lisa Ferdinand)