(CNN) An unarmed Russian Air Force aircraft overflew the US Capitol, the Pentagon, Central Intelligence Agency and Joint Base Andrews at low altitude on Wednesday as part of a longstanding treaty that allows the militaries of the United States and Russia to observe the other from the air, according to two people familiar with the flight.
The flight was part of the Treaty on Open Skies, which allows military aircraft from the United States and Russia and other nations to fly aerial observation flights to observe military sites of the 34 signatory nations.
A radar that is able to track targets at ranges of over 3,000 km has been activated within the Russian air defense system on Dec. 2, 2013.
The Kolkino radar station, using the first modernized 29B6 radar, is able to track aerial targets flying as far aways as Denmark. Earlier the radar had a research role only, and even if full operational capability is expected within 2 years, the new system is already keeping an eye on what flies west of the Russian border. Continue reading