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 the CBS network coverage as violence and protests occurred outside the convention, as well as scuffles inside the convention hall. When Dan Rather was punched to the floor (on camera) by security personnel, Cronkite commented, "I think we've got a bunch of thugs here, Dan." The first publicly transmitted live trans-Atlantic program was broadcast via the Telstar satellite on July 23, 1962, at 3:00 pm EDT, and Cronkite was one of the main presenters in this multinational broadcast. The broadcast was made possible in Europe by Eurovision and in North America by NBC, CBS, ABC, and the CBC. The first