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 "Dinosaur!" on A&E (not related to the documentary of the same title hosted by Christopher Reeve on CBS six years earlier), and a 1994 follow-up series, "Ape Man: The Story of Human Evolution". In 1995, he narrated the World Liberty Concert held in the Netherlands. Cronkite routinely hosted the Kennedy Center Honors from 1981 to 2002. Cronkite appeared briefly in the 2005 dramatic documentary "The American Ruling Class" written by Lewis Lapham; the 2000 film "Thirteen Days" reporting on the Cuban Missile Crisis; and provided the opening synopsis of the American Space Program leading to the events in Apollo 13