Container delivery system bundles roll off the back ramp of the cargo plane and parachute to the ground during an air-drop operation on June 24, 2019. A brigade with the PLA Air Force' airborne troops organized various high-risk and high-strength air-drop operations focusing on such subjects as continuous support, long-distance aerial delivery and so on, so as to beef up the troops' long-distance support capability. (eng.chinamil.com.cn/Photo by Li Zhiwei and Xiao Yanfei)