The USA already has this. Russia and China have similar systems. If you fly a kamikaze attack against a large US warship, Raytheon's Phalanx CIWS will automati

The USA already has this. Russia and China have similar systems. If you fly a kamikaze attack against a large US warship, Raytheon's Phalanx CIWS will automatically fire. I believe it handles speedboats as well. The Patriot system is similar, able to shoot down incoming fighter jets.