From the Purpose: "'As drone activity continues to increase in the United States, Emergency Communications Centers (ECCs) or Public Safety Answering Points (PSAPs) may experience an increase in drone-related calls.' ECCs should understand the distinctions between proper and improper drone activity and collect the information needed to inform potential law enforcement response. This guidance provides an overview of safe and suspicious drone flight activity and a suggested script that may be used during a drone-related call. In addition to this guidance, ECCs should refer to relevant state or local laws to inform their drone response."
U.S. Cybersecurity and Infrastructure Security Agency: https://www.cisa.gov/