By Kris Osborn, Scout Warrior: “Using underwater acoustic signals, a surface buoy, beacon or “node,” and GPS signals in a coordinated fashion, the Positioning System for Deep Ocean Navigation (POSYDON) is able to quickly relay location coordinates from undersea drones on patrol to command and control systems on board a ship or submarine.”
Medium Extended Air Defence System (MEADS)
From Army-Technology: “The medium extended air defence system (MEADS) was developed to replace Hawk and Patriot systems worldwide. MEADS will protect manoeuvring forces and fixed installations against attacks from current and next-generation tactical ballistic missiles, low and high-altitude cruise missiles, remotely piloted vehicles, and manoeuvring fixed-wing aircraft and rotary wing aircraft. The total system is designed for rapid deployment and tactical mobility.”