When we saw him, he was standing on his snow-covered driveway. One hand was clutching a walker, the other one was over his head, waving. He was smiling brightly and clearly happy for the company. After greeting him, he picked up the walker and walked freely to the house, telling us that he carried his walker outside with him "just in case." He had suffered a heart attack some years ago and has had both of his knees replaced (he built his own rehabilitation machines, which are still in his basement).