U.S. Air Force Gen. Terrence J. O'Shaughnessy, Pacific Air Forces commander, discusses challenges throughout the Indo-Asia-Pacific region during a 2017 Pacific Air Chiefs Symposium panel at Joint Base Pearl Harbor-Hickam, Hawaii, Sept. 26, 2017. The symposium marks the largest number of air chiefs gathering from across the Indo-Asia-Pacific for dialogue and is intended to increase cooperation with our allies and partners. (U.S. Air Force photo/Tech. Sgt. Kamaile Casillas)