Arnold Zenker 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 time, was chosen because a strike by the American Federation of Television and Radio
Walter Cronkite assassination on November 22, 1963. Another factor in Cronkite and CBS' ascendancy to the top of the ratings was that, as the decade progressed, RCA made a corporate decision not to fund NBC News at the levels that CBS provided for its news broadcasts. Consequently, CBS News acquired a reputation for greater accuracy and depth in coverage. This reputation meshed well with Cronkite's wire service experience, and in 1967 the "CBS Evening News" began to surpass "The Huntley-Brinkley Report" in viewership during the summer months. In 1969, during the Apollo 11 (with co-host and former astronaut Wally Schirra) and Apollo