ShotSpotter microphones are controversial surveillance devices designed to alert authorities to gunshots. But their exact locations have been kept secret from both the public and the police—until now. WIRED obtained leaked documents detailing the locations of over 25,500 of these devices, and what we learned abut how and where they’ve been deployed may surprise you.

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Director: Lisandro Perez-Rey
Director of Photography: Constantine Economides
Editor: Matthew Colby
Host: Dhruv Mehrotra
Line Producer: Joseph Buscemi
Associate Producer: Paul Gulyas; Brandon White
Production Manager: Peter Brunette
Camera Operator: Chris Eustache
Sound Mixer: Sean Paulsen
Production Assistant: Ryan Coppola
Post Production Supervisor: Christian Olguin
Post Production Coordinator: Ian Bryant
Supervising Editor: Doug Larsen
Assistant Editor: Fynn Lithgow