Rural Carrier Christopher Chmielinskii was recently delivering mail in North Attleboro, MA, when he noticed a customer in distress outside her home.
Chmielinskii rushed to aid the woman — who was struggling to breathe — and reached her in time to catch her as she began to collapse.
The Postal Service employee helped the customer get inside and turned on her portable oxygen tank, which had apparently malfunctioned.
Chmielinskii stayed with the woman until she was sure she would be OK without medical attention.