Gen. Dempsey listens to a question at the Brookings Institute Chairman of the Joint Chiefs of Staff Gen. Martin E. Dempsey listens to a question at the Brookings Institute in Washington, D.C., on June 27, 2013. Dempsey earlier addressed the audience on the military's role in cyber security and then took questions SHARE IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 068213-B-DGD37-102.jpg Photo Gallery