5 RULES FOR EFFECTIVE WORK AGAINST #UAVS: TACTICS FOR USING AIR DEFENSE SPOTLIGHT SYSTEMS PART 1 The effectiveness of air defense searchlights in countering UAVs and unmanned aerial vehicles (UAVs) has become clear to everyone. #UAV technology is rapidly advancing, and just six to eight months ago, a narrow-beam searchlight was sufficient. Today, this is critically inadequate. An aircraft-type UAV flies an average distance of 1 km in 20 seconds, with some models covering 10 to 12 seconds.