Missile Guardians Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, speaks with soldiers assigned to the 49th Missile Defense Battalion at Fort Greely, Alaska, Aug. 19, 2017. The soldiers guard the ground-based interceptor missiles at the base. DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro SHARE: Download: Full Size (2.16 MB) Credit: Dominique A. Pineiro VIRIN: 170820-D-PB383-010.JPG Photo Gallery