During the military training in 2019, the Nanjing Marine Police also used drones and intelligent power life buoys for the first time to conduct a three-dimensional rescue rescue exercise to rescue many people who fell into the water. Once the instruction was issued, the rescue marine police quickly rushed to the shore and divided into two groups to start rescue. Be close to those who fall into the water and give them help as quickly as possible. At the same time, another group of rescue police chose the best location, tossed and manipulated the intelligent life buoy to rush to the overwater personnel. Under the drag of the intelligent life buoy, the overwater personnel successfully arrived on the shore and were rescued.