A group of inspectors will begin a monitoring flight by observation aircraft Tu-154M Lk-1 over the United States under the International Open Skies Treaty, the acting head of the Russian National Centre for Reduction of Nuclear Danger told Itar-Tass.

“An observation flight at a maximum distance of up to 4,900 kilometres will be made from September 21 to 29 from the Open Skies airfield Wright-Patterson, Ohio,” Ruslan Shishin said.