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 Cronkite concluded that "The failure to give free airtime for our political campaigns endangers our democracy." During the elections held in 2000, the amount spent by candidates in the major TV markets approached $1 billion. "What our campaign asks is that the television industry yield just a tiny percentage of that windfall, less than 1 percent, to fund free airtime." He was a member of the Constitution Project's bipartisan Liberty and Security Committee. He also supported the nonprofit world hunger organization Heifer International. In 1998, he supported President Bill Clinton during Clinton's impeachment trial. He was also a proponent of