CBS Evening News a one-evening test broadcast on August 19, 1965, before permanently switching to the format on January 31, 1966. Cronkite's prime time special report, "Who, What, When, Where, Why", broadcast on February 27, 1968, ended with his declaration that the United States could only hope for a stalemate in Vietnam. It is often credited with influencing Lyndon Johnson's decision to drop out of the race for President. "If I've lost Walter Cronkite ... [I]'ve lost Middle America", he stated. Under Cronkite, the newscast began what would eventually become an 18-year period of dominating the ratings among the network evening news programs.
Walter Cronkite hands together on camera with a smile and uttering, "Whew...boy" on July 20, 1969, when the Apollo 11 lunar landing mission put the first men on the moon. According to the 2006 PBS documentary on Cronkite, there was "nothing new" in his reports on the Watergate affair; however, Cronkite brought together a wide range of reporting, and his credibility and status is credited by many with pushing the Watergate story to the forefront with the American public, ultimately resulting in the resignation of President Richard M. Nixon on August 9, 1974. Cronkite had anchored the CBS coverage of Nixon's address,