Ключевые слова: aid, beach, death, demonstrating, demonstration, doctor, drowning, emergency, emergency equipment, emergency services, exercise, first aid, hands, health, healthcare and medicine, healthcare worker, help, human hand, lake, life, life saver, lifeguard, lifesaver, male, medical, medical equipment, medical occupation, medical procedure, medicine, oxygen, oxygen mask, paramedic, patient, practice, presentation, reanimation, rescue, rescuer, saver, sea, shock, swimmer, technique, training, urgency, water,