RIA News cites the statement of the interlocutor of the agency:
The task of the second division of the C-400 complex is to timely detect and, if necessary, destroy the air objects representing threats to the Crimea from Ukraine.
The threats are called Ukrainian missiles, which have been actively tested in recent times. Earlier, during the tests, the trajectory of one of these missiles on the maps of the General Staff of the Supreme Soviet of Ukraine was "drawn" through the airspace of the Russian Federation near the Crimean Peninsula, representing a serious danger to both residents of the peninsula and navigation in the area.
From the material:
These tests of Ukrainian missiles pose a danger to the peninsula, since the trajectory of their flight is almost unpredictable. In order to avoid "accidents", a layered air defense system is being formed in the Crimea, and the task of the C-400 division near Sevastopol is to eliminate such threats at long distances.