Attack of the drones: the mystery of disappearing swarms in the US

When groups of sinister drones began hovering over homes in America’s Midwest, the FBI, US Air Force and 16 police forces set up a task force. But the drones vanished. Did they even exist? Amelia Tait investigates

The FBI Investigated Drones That Swarmed Towns in the Midwest

It's Creepy': Unexplained Drones Are Swarming by Night Over Colorado - The New York Times

Attack of the drones: the mystery of disappearing swarms in the US midwest, Drones (non-military)

Drones that swarmed U.S. warships are still unidentified, Navy chief says

Colorado drone mystery sightings finally might be solved, Military

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IEEE - Aerospace and Electronic Systems - May 2022 - 25

Mystery as large 'creepy' drones swarm over Colorado and Nebraska each night leaving cops and FAA baffled – The Sun

Responding to Drone Swarms at Sea Proceedings - December 2022 Vol. 148/12/1,438

China selling deadly AI 'Blowfish' drones that decide who lives and who dies to Middle East war zones

What Happened To Colorado's Mysterious Drones? Here's The Thing: Nobody Knows

A US warship FIRED on a drone swarm that terrorized Navy destroyers off California for weeks in 2019

List of unmanned aerial vehicles - Wikipedia

DOD successfully tests terrifying swarm of 104 micro-drones

U.S. Navy Unmanned Surface Vessels Complete First Pacific Journey Amidst Growing Tensions - The Debrief