Ключевые слова: 2017, accident, adult, aerial, alarm, ambulance, audience, berlin, celebration, concert, crowd, crowded, day, diversity, drugs, emergency call, enjoyment, event, fans, festival, fete de la musique, first aid, fun, german, germany, group, health, healthcare, male, mauerpark, music, nightlife, open air, outdoor, outdoors, park, party, people, public park, rave, rescue, service, stage, summer, tourism, transporter, young,