ITS COWARD KILLING OVERREACTING TIME
The military already has something called the Pain Ray. I [dukar] you not, it's a ray of energy that causes emotional, physical, and mental pain all over your body, and the bodies of everyone all around you, until you and your buddies surrender.
Besides, some obscure dude named Archimedes, and later another unknown dude named Tesla, both made their own highly functional, highly deadly death rays back in their times.