Revised 2024 Surveillance Technology Annual Report ShotSpotter — File 25-0837

APPENDIX B: CITY OF SOMERVILLE ANNUAL SURVEILLANCE REPORT Division or Unit (if applicable): Police Department Compliance Officer: Capt. S. Sheehan Submitted by: Chief Shumeane Benford Date: 2/19/25 Surveillance Technology: ShotSpotter 1. A description of how surveillance technology has been used, including whether it captured images, sound, or information regarding members of the public who are not suspected of engaging in unlawful conduct: ShotSpotter is a gunshot detection service that utilizes 35 sensors installed in the city’s coverage area to identify and locate gunfire. Sensors “listen” for gunshot-like sounds and trigger only when 3 different sensors detect a gunshot-like sound at the same time to determine location. ShotSpotter records gunshot like sounds and does not record video. 2. Whether and how often data acquired through the use of the surveillance technology was shared with local, state, and federal, the name of any recipient entity, the type(s) of data disclosed, any legal standard(s) under which the information was disclosed, and the justification for the disclosure: During the time period of July 1, 2023 to December 31, 2024 we received 22 ShotSpotter activation notices. The ShotSpotter detection information was shared with Middlesex District Attorney’s Office to assist in the prosecution of criminal cases. The data was shared pursuant to the Massachusetts Rules of Evidence. **(When a ShotSpotter Activation occurs and is confirmed, that info is included in our weekly crime bulletin, which is supplied to surrounding Police Departments) 3. A summary of community complaints or concerns about the surveillance technology, if any: No complaints received. 4. The results of any internal audits, any information about violations of the surveillance use policy, and any actions taken in response other than to the extent that such inclusion would violate the privacy rights of an employee of the city: No internal audits conducted.

5. Whether the surveillance technology has been effective at achieving its identified purpose: The identified purpose of the ShotSpotter Technology is to provide the SPD with an early alert for gunshots detected within the designated geographical monitoring area. During the time period of July 1, 2023 to December 31, 2024 we received 22 ShotSpotter alerts. Ballistic evidence was recovered during the course of 4 investigations related to ShotSpotter alerts. ShotSpotter has been effective in achieving its identified purpose. 6. The number of public records requests received by the city seeking documents concerning surveillance technology approved during the previous year: There were 0 public records requests received for ShotSpotter data during the time period of July 1, 2023 to December 31, 2024. 7. An estimate of the total annual costs for the surveillance technology, including personnel and other ongoing costs, and what source(s) of funding will fund the technology in the coming year, if known: ShotSpotter is paid for by the Urban Area Security Initiative (UASI). 8. Whether the civil rights and liberties of any communities or groups, including communities of color or other marginalized communities in the city are disproportionately impacted by the deployment of the surveillance technology: None 9. A disclosure of any new agreements made in the past 12 months with non-city entities that may include acquiring, sharing, or otherwise using surveillance technology or the surveillance data it provides: None