Indonesian Air Vice Marshal Umar Sugeng Haryono (left) and U.S. Air Force Maj. Gen. Russell Mack (Right) Pacific Air Forces (PACAF) deputy commander, receive a briefing during the Airman-to-Airman (A2A) talks with Indonesia at Joint Base Pearl Harbor-Hickam, Hawaii, April 11, 2018. PACAF senior leaders hosted Indonesian air force leaders to discuss common regional security challenges. The A2A talks are intended to increase cooperation with our allies and partners. (U.S. Air Force Photo/Staff Sgt. Daniel Robles)