The following is the March 15, 2022, Government Accountability Office science and technology summary, Counter Drone Technologies.
From the report
What is it? Uncrewed aircraft systems (UAS), or “drones,” have a variety of uses, such as photography, delivering packages, and monitoring crops. However, UAS can also pose significant safety and security risks if they enter airspace around critical U.S. sites without authorization or if used for illegal activities. To reduce these risks, counter-UAS...
https://news.usni.org/2022/03/24/gao-report-on-counter-drone-technologies