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 News nights at 7:00 - 7:30PM UTC (Eastern Time) on CBS. CBSN is a 24-hour streaming news channel available from the CBS News website and launched on November, 4th 2014. The channel feature live news from 9am to midnight on weekdays. The channel makes all of the resources of CBS News available directly on digital platforms with live, anchored coverage 15 hours each week. It is a first for a U.S. 24-hour news channel to forgo cable and be available exclusively only on line and on smart devices such as smart TV's Apple TV, Roku, Amazon Fire and others. The Channel