A large scale air defense exercise is being held in Siberia’s Republic of Buryatia and a press release says around 500 surface-to-air missiles will be fired against 250 targets and two cruise missiles.
By Vitaly V. Kuzmin (http://www.vitalykuzmin.net/?q=node/600) [CC BY-SA 3.0 or CC BY-SA 3.0], via Wikimedia Commons
Air defense missile systems such as the S-400, S-300, Tor-M2U, Osa and Strela-10 are participating.