Martin Dempsey: Cyber Attacks Are Black Swan Threat to US
Description:General Martin Dempsey will discuss current American international security challenges and the future of the U.S. military. General Dempsey, the nation's highest ranking military officer, serves as the 18th chairman of the Joint Chiefs of Staff. In this capacity, he is the principal military adviser to the president, the secretary of defense and the National Security Council.(2:46)