Secrets Russian Spies Airplanes
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Curiosity is a natural feature of a human being. Air balloons, and airplanes after them, strongly increased possibilities for this curiosity to be satisfied.
Very soon a completely mercantile interest came to replace a lighthearted curiosity. And really, a view from height of birds’ flight taken at war was giving full picture of enemy’s positions and sometimes even his intentions.Secrets Russian Spies Airplanes,