Army UH-60 Black Hawk helicopters assigned to the U.S. Army Aviation Battalion-Japan based at Camp Zama, Japan wait for takeoff at Yokota Air Base, Japan, Aug. 17, 2017 during chairman of the Joint Chiefs of Staff visit to Japan. Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff is traveling to Korea, China and Japan to meet with allies and improve military-to-military ties during a complicated time in the Indo-Asia-Pacific region. (U.S. Air Force photo by Yasuo Osakabe)