Two rescue boats put out "fire" that occurred on a vessel (C) during a maritime emergency drill near the Port of Huanghua in Cangzhou, north China's Hebei Province, Aug. 21, 2018. The maritime safety administrations of Hebei, Tianjin and Shandong held a joint emergency drill in the western Bohai Sea on Tuesday to tackle with search and rescue at sea as well as oil spill response. (Xinhua/Ma Ning)