Historic Pacific F-35 Symposium takes place in Hawaii
South Korean air force Brig. Gen. Yoon Byung Ho, the South Korean air forces headquarters office of policy chief, signs Pacific Air Forces' guest book during the Pacific F-35 Symposium at Joint Base Pearl Harbor-Hickam, Hawaii, March 15, 2017. The symposium is a PACAF-hosted event that brings together the four Pacific members of the F-35 program: Japan, Australia, South Korea and the U.S. (U.S. Air Force photo/ Tech. Sgt. James Stewart)