Attack of the drones: the mystery of disappearing swarms in the US midwest | Drones (non-military) | The Guardian
What Happened To Colorado's Mysterious Drones? Here's The Thing: Nobody Knows | Colorado Public Radio
Drone swarms: FBI investigating swarms of drones in at least three states including Colorado, Nebraska and Kansas - CBS News
Mysterious drones over Colorado: What we know, what we don't | 9news.com
Government UFO Report Won't Rule Out Visitors from Space | BU Today | Boston University
TR-3B Anti-Gravity Spacecrafts | Military.com
Mysterious drone swarms flying at night are baffling US authorities | New Scientist
Mysterious drone swarms flying at night are baffling US authorities | New Scientist
The Most Credible UFO Sightings And An Interactive Map - Metrocosm
Conspiracy theories abound despite officials' denial of drone invasion - ABC News
UFO sightings: Why federal reports probably won't point to aliens
The Unexplained Phenomena of the U.F.O. Report | The New Yorker
UFOs regularly spotted in restricted U.S. airspace, report on the phenomena due next month - 60 Minutes - CBS News
This Theory Could Explain Many Military UFO Sightings
Government UFO Research - Pentagon's UFO Group Officially Active
When Dozens of Korean War GIs Claimed a UFO Made Them Sick - HISTORY
Iran's Flying Saucer Downed U.S. Drone, Engineer Claims | WIRED
UFOs regularly spotted in restricted U.S. airspace, report on the phenomena due next month - 60 Minutes - CBS News
Black triangle (UFO) - Wikipedia
Locals Are Creeped Out. Authorities Are Concerned. The Colorado Drone Mystery Buzzes On | Colorado Public Radio
Mysterious 'square' craft seen hovering near Charlotte, NC. | Charlotte Observer
Entropy | Free Full-Text | Estimating Flight Characteristics of Anomalous Unidentified Aerial Vehicles | HTML
The Global Hawk Drone Iran Shot Down Was a $220M Surveillance Monster | WIRED
US Goes Full Throttle On 'Counter-Drone Tests' As UFO Sightings Increase Over US Military Bases
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New drone task force investigating mysterious sightings across Colorado, Nebraska - ABC News
