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Apr 14, 1999 | Briefing Book
Washington, D.C., April 14, 1999 – The use of overhead platforms to observe events on the earth can be traced to the French Revolution, when France organized a company of aerostiers, or balloonists, in April 1794. The United States employed balloons during the Civil War, although little intelligence of value was obtained. In January 1911, the San Diego waterfront became the first target of cameras carried aboard an airplane. Later that year the U.S. Army Signal Corps put aerial photography into the curriculum at its flight training school.

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