A sailor assigned to a frigate flotilla with the navy under the PLA Northern Theater Command fires the close-in weapons system at mock sea target during a 3-day round-the-clock training exercise in late February. The troops completed training items including gun fire, sea blockade, joint search and rescue, air defense and anti-missile, improving the capability of using weapons under complex situations. (eng.chinamil.com.cn/Photo by Liu Mingwei)