Gyrotrons are capable of producing Megawatt power radiation at millimeter and sub-millimeter wavelengths , they are very efficient, circa 60% and can be made to chirp over wide frequency ranges. Gryratrons offer a very effective means of defence against advanced weaponry that rely on embedded electronics and multiple communication systems. Electronics, sensors and communication systems can be damaged from a distance of 40 kM. The ability to deliver directed beams is straightforward; Russia already has this technology to target Drones.