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 other news presenters bore the title before him. Cronkite anchored the network's coverage of the 1952 presidential election as well as later conventions. In 1964 he was temporarily replaced by the team of Robert Trout and Roger Mudd; this proved to be a mistake, and Cronkite returned to the anchor chair for future political conventions. From 1953 to 1957, Cronkite hosted the CBS program "You Are There", which reenacted historical events, using the format of a news report. His famous last line for these programs was: "What sort of day was it? A day like all days, filled with those