Walter Cronkite has covered virtually every major news event during his more than 65 years in journalism - the last 54 affiliated with CBS News. He became a special correspondent for CBS News when he stepped down on March 6, 1981 after 19 years as anchorman and managing editor of the CBS Evening News. Affectionately nicknamed "Old Iron Pants" for his unflappability under pressure, Mr. Cronkite's accomplishments -- both on-air and off -- have won him acclaim and trust from journalism colleagues and the American public alike.