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
CBS Evening News same period (since the 2010–11 season). "Pelley has refocused the program towards hard news and away from the soft news and infotainment features of the early Katie Couric era. Story selection has focused more on foreign policy, Washington politics, and economic subjects. The program's audience viewership began to grow immediately, closing the gap between the "CBS Evening News" and its competitors by one million viewers within a year, although the CBS program remains in third place among the network evening newscasts. In late May 2016, a new theme tune composed by Joel Beckerman of Man Made Music was introduced. Later