Ключевые слова: barbed wire, barrier, boundaries, concrete, concrete structure, defense, defense mechanism, deterrent, enhancement, facility protection, fence, high security measures, increased, installation, intrusion, perimeter, perimeter reinforcement, prevention, property boundaries, property defense, protection, resilient, restriction, safety, safety fortification, safety measure, safety precaution, secure, secure premises, security, security enhancement, sharp, strong fencing, sturdy, trespassing, wall, walls, wiring,