Moscow, September 10 (KCNA) -- Two strategic bombers of the Air Force of Russia patrolled the sky above the neutral waters of Arctic Ocean on Sept. 7.

They took off from the Ukrainka Air Base and had mid-air refueling from a tanker plane during flight that lasted for more than 16 hours. They trained aeronautics in the altitude where the judgment of direction is difficult, clarified a spokesman for the Air Force of Russia.