Arnold Zenker Arnold Zenker Associates in Boston, which trains "people to successfully master the public spotlight." Arnold Zenker Arnold L. Zenker (born 1938) is a retired media broadcaster and public appearance counselor who gained brief stardom by sitting in for Walter Cronkite on the "CBS Evening News" in 1967. Zenker studied at the University of Pennsylvania in Philadelphia, from which he received an undergraduate and a law degree. In 1967 at the age of 28, he was asked to sit in for anchor Walter Cronkite to deliver the nightly news. Zenker, working as a Manager of News Programming at CBS at the
Walter Cronkite unsure about how much of an impact his editorial report had on Johnson's decision to drop his bid for re-election, and what eventually convinced him that the President had made the statement was Bill Moyers, fellow journalist and former aide to Johnson, telling him "The president flipped off the set and said 'If I've lost Cronkite, I've lost Middle America.'" Several weeks later, Johnson, who sought to preserve his legacy and was now convinced his declining health could not withstand growing public criticism, announced he would not seek reelection. During the 1968 Democratic National Convention in Chicago, Cronkite was anchoring