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Unmanned aerial vehicle - Wikipedia
Unmanned aerial vehicle (UAV) | Definition, History, Types, & Facts
List of unmanned aerial vehicles - Wikipedia
What’s the Difference Between Drones, UAV, and UAS?
Unmanned aerial vehicles in the United States military
Unmanned Aircraft Systems (UAS) - Federal Aviation Administration
Unmanned Aerial Vehicles | RAND
A Brief History of Unmanned Aircraft | Smithsonian
Military aircraft - UAVs, Drones, Autonomy | Britannica