A U.S. Army UH-60 Black Hawk helicopter assigned to the U.S. Army Aviation Battalion-Japan based at Camp Zama taxis on the flight line at Yokota Air Base, Japan, Sept. 3, 2017, during the Tokyo Metropolis Comprehensive Disaster Prevention Drill. U.S. military helicopters from Naval Air Facility Atsugi, Camp Zama, and Yokota participated in the drill where humanitarian supplies were offloaded from each aircraft at Yokota to simulate the interoperability of U.S. and Tokyo Metropolitan Government in responding to a natural disaster. (U.S. Air Force photo by Yasuo Osakabe)