"The Crimean bridge is one of the most protected bridges in the world.

It is guarded by the С-400 “Triumph” and C-1 “Pantsir” air defense systems, the “Vikhr” missile system, the “Plavnik” sonar and suppression of saboteurs system, so when professional divers (or ordinary divers) are detected at a distance closer than 300 meters from the bridge, an audible signal is turned on with the requirement to leave the restricted area. If an uninvited guest does not change the course and swims to the supports of the bridge closer than 100 meters, the intensity of the sound signal increases sharply, up to the pain threshold, and the person cannot stand it and gets out of the water.

The bridge, in addition to the Ministry of Internal Affairs and the FSB, is guarded by a special naval brigade of the Russian Guard - they patrol the water area on anti-sabotage boats, and are also armed with two-medium assault rifles, machine guns, grenade launchers and MANPADS. Also, the bridge is protected by the EW (electronic warfare) service, including enforcing a ban on flying drones".