Coastal Troops of the Russian Navy
Su-27 launched an attack on Russian air defense, S-400 Triumph "eliminated threat"
The focus of the exercises was to improve their ability to defend against enemy air attacks.
The exercise involved the surface-to-air missile regiment of the Fleet Air Defense Formation, with teams operating the S-400 Triumph systems practicing response strategies after receiving a warning about an imagined violation of airspace by an "enemy" Su-27 aircraft.