Ключевые слова: 911, aid, alarm, alert, assist, assistance, blue, box, call, city, communication, contact, crime, danger, day, emergency, equipment, help, key, life, metal, new, outdoors, parking lot, phone, police, protection, public, push, red, rescue, ring, safe, safety, save, security, service, sign, sos, symbol, system, telephone, trouble, urgency, wall, warning, yellow,