It was a proud moment for Suffolk County Police Officer Matthew DeMatteo, watching this teen girl graduating from North Babylon High School. Because it was the same girl he rescued from icy waters six years ago. Sarah Thalhammer was 11, when she was dragged on to the frozen Great South Bay by a dog. The heroic police officer crawled onto the ice and pulled her to safety, risking his own life. Now it’s the moment of a lifetime for Sarah Thalhammer and the hero police officer.