Blink and you'll miss it.

A Police dash cam caught the heart-stopping seconds before an elderly woman was nearly killed by an oncoming train. The 89-year-old woman from New Jersey had walked onto a train track while the crossing lights flashed.

She surely would have been struck by the oncoming train if it hadn't been for two "angels" who rushed to her aid. Good Samaritan, Jon Mango told ABC News that he saw her step onto the tracks and that's when he acted.

"I saw the train was really coming," he said. "I sprinted onto the tracks and I pulled her by the arm. She was scared, like I was trying to do something."

Watch the incredible moment below: