Ключевые слова: 911, aid, alarm, alert, assistance, beach, button, call, communication, danger, emergency, equipment, fire, guard, help, hotline, international, internet, isolated, life, lifebuoy, lifeguard, lifesaver, location, map, marker, message, phone, protection, rescue, ring, safety, save, sea, security, service, sign, sos, support, survival, technology, telephone, text, warning, water, web,