 The S-400 air defense system division has been deployed in Russian capital Moscow, the Russian media reported today. Moreover, the complex of radar stations between Moscow's Lossinia-Ostrov forest area and the Skolniki district has been activated. The air defense system protects the Chalkovsky military airbase located in Shalkova city in Moscow region. This airfield is actively used by the Russian army to transport military cargo to the front line. In addition, part of the aviation of the Russian armed forces is located there and is used for missile attacks on Ukraine.