Drones: A Report on the Use of Drones by Public Safety Agencies--and a Wake-Up Call About the Threat of Malicious Drone Attacks [open pdf - 4MB]
From the Overview: "This report is about two opposite but related issues: (1) the use of drones by police agencies to protect public safety and (2) the use of drones by malicious actors to commit various crimes such as acts of terrorism. [...] This report should be seen as two separate reports. The bulk of the document, chapters 1 and 2, provides guidance to police and sheriffs' departments about how to identify the ways in which drones could facilitate their work and how to create a drone program to accomplish those goals. The remainder of the document, chapter 3, is about the malicious use of drones."
U.S. Department of Justice, Office of Community Oriented Policing Services: https://cops.usdoj.gov/