Russian surveillance plane spotted over Boston Friday

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BOSTON - An incredible photo taken today over Boston shows a Russian surveillance plane.

A photographer with the Boston Herald took the photo in South Boston and estimated the plane to be only about 3,600 feet high -- less than a mile above the ground and one-tenth as high as cruising altitude for most commercial flights.

We're told this flight was sanctioned because of what is called the Open Skies Treaty, an international program that allows unarmed aerial surveillance flights over participating nations.

Russia and the United States are two of the 34 nations in this agreement.

Earlier in the week, the same Russian plane was spotted over Washington D.C. and has been conducting missions based out of an Air force base in Ohio.

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