A 14-year-old boy suddenly fell on the sidewalk unconscious. When a passer-by called an ambulance, a passing young woman in white immediately stepped forward to check on him. She kneeled on the ground, and skillfully placed the boy on his back for CPR since she couldn't feel his pulse. In three minutes, the teenager regained consciousness. The young woman accompanied him to the hospital. Turns out, she is a nurse. She said that her occupational instincts took over, and she acted without hesitation. According to the report, the boy is out of danger.