TV news giant David Brinkley, who during his five decade-long broadcasting career won 10 Emmys, three Peabodys and, in 1992, the Presidential Medal of Freedom, died Wednesday night at his home in Houston of complications from a fall. He was 82. Brinkley began his career at NBC in the late '50s as a political reporter. He eventually went on to co-anchor the evening news, first with Chet Huntley and later with John Chancellor. In 1981, he joined ABC news as host of This Week with David Brinkley, a post he held until 1997. "For those of us who were privileged to work with him over his long and outstanding career, we know that he set a shining example for everyone in broadcast journalism," ABC News President David Westin said. "ABC News has a richer heritage because of his many contributions to the the network."