Use radar for targeting. WiFi has been used to see peoples bodies through walls, 10GHz has been used in radars, the same beam that destroys can be used to imag

Use radar for targeting. WiFi has been used to see peoples bodies through walls, 10GHz has been used in radars, the same beam that destroys can be used to image the target. You may not even need to do imaging, just look for resonance or increased energy absorption to indicate the beam is on target.