A 51-year-old transit officer Steven Rocher helped a woman by delivering her baby before dawn on Christmas day.

Rocher, a Southeastern Pennsylvania Transportation Authority police sergeant, was driving Tuesday through North Philadelphia when he heard a screaming woman.

He stopped and saw the woman lying near a bus stop on the sidewalk and a man beside the woman tugging at her clothes.

Rocher said, "As I got closer, he says to me, `Help me, please!'"

According to Rocher, he was a transit officer for 20 years and were required to get annual CPR training, "but nothing about delivering babies."

Yet, he still tried to be calm and managed to figure out what to do.

"When I heard the baby crying, I felt a sense of comfort because I knew the baby was OK," he said.