A chaff round fired from the decoy launching system aboard a warship explodes in the air during a live-fire training exercise in waters of the South China Sea on May 27, 2017. The guided-missile destroyers Lanzhou (Hull 170), Changsha (Hull 173) and Hefei (Hull 174) and the guided-missile frigate Sanya (Hull 574) participated in the training. (Photo/eng.chinamil.com.cn)
