The following is the May 31, 2022, Congressional Research Service In Focus report, Department of Defense Counter-Unmanned Aircraft Systems.
From the report
Unmanned aircraft systems (UAS), commonly called drones, have proliferated rapidly and are available to nation states and to nonstate actors and individuals. These systems could provide U.S. adversaries with a low-cost means of conducting intelligence, surveillance, and reconnaissance missions against—or attacking—U.S. forces. Furthermore,...
https://news.usni.org/2022/06/01/report-to-congress-on-anti-drone-weapons