From Bill's Blog:
Finally, tonight we look back on the USS Thresher. This nuclear attack submarine sank on April 10, 1963 and all 129 souls on board were lost. Many of these sailors and civilians lived in Maine. The boat itself was built here and was the pride of the Portsmouth Naval Shipyard in Kittery. It was fascinating with a family member, one of the engineers and an historian about the Thresher. I will never forget the night the news bulletin of her sinking broke into network programming.