Letter Carrier Dang Hang was recently delivering mail to a residence in Stockton, CA, when he heard a loud thud that concerned him.
Hang spotted a customer inside who’d collapsed after experiencing a diabetes-related blackout.
The Postal Service employee immediately called 911 and remained on the scene until paramedics arrived and took the woman to a hospital.
The customer, who recovered from the incident, later contacted the local Post Office.
She called Hang her guardian angel and thanked him for saving her life.