Unmanned Unknowns: As they get smaller, the legal issues get bigger.

I was an unmanned aircraft expert until I turned 16. Up until then, I built squadrons of balsa and tissue control-line airplanes and competed with them. But then I soloed in a Cessna 150, discovered girls and forgot about toy airplanes.

Now, toy airplanes are “Unmanned Aircraft Systems,” and the economic, social and legal implications continue to loom larger while the “aircraft” get smaller and smaller.

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