Royal Australian Air Force, left, Japan Air Self-Defense Force, center, and U.S. Air Force, right, security for airmen secure an area during Exercise Cope North 17 at North Field, Tinian, Feb. 22, 2017. The exercise includes 31 units and more than 2,700 personnel from three countries and continues the growth of strong, interoperable relationships within the Indo-Asia-Pacific region through integration of airborne and land-based command and control (U.S. Air Force photo by Airman 1st Class Jacob Skovo)