The TN drone law specifically states that LE can use a drone to search for a missing person. In general LE must obtain a warrant to use a drone for surveillance: The statute generally prohibits drone use by a law enforcement agency to gather evidence or other information. Following the general prohibition, the statute prescribes exceptions by which drone use is permissible. The statute allows use of a drone in these circumstances: to counter a high risk of a terrorist attack by a specific individual or organization if the United States secretary of homeland security determines that credible intelligence indicates that there is such a risk; if the law enforcement agency first obtains a search warrant signed by a judge authorizing its use; if the law enforcement agency possesses reasonable suspicion that, under particular circumstances, swift action is needed to prevent imminent danger to life; to provide continuous aerial coverage when law enforcement is searching for a fugitive or escapee or is monitoring a hostage situation; or to provide more expansive aerial coverage when deployed for the purpose of searching for a missing person. Tennessee Drone Laws, Rules and Regulations A later section of the statute indicates that it would be a misdemeanor for anyone acting under the direction of law enforcement to use a drone for surveillance. I believe TES would fall under this category. I think that they would be covered under the missing person exception, but I’ll let an attorney verify that. I think if LE has a suspect and is searching their property for a mp with a drone, they would be wise to obtain a warrant to avoid a problem at trial. Likewise, if they see something suspicious during an mp search, they would be wise to stop and get a warrant. There is usually an on call judge to cover nights and weekends when the courts are closed for just such emergencies.