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 he was shot. Barker relayed information that Kennedy's condition was extremely critical. Then, after a prayer for Kennedy, Barker quoted an unofficial report that the President was dead but stressed it was not confirmed. After several minutes, the coverage came back to the CBS newsroom where Cronkite reported that the President had been given blood transfusions and two priests had been called into the room. He also played an audio report from KRLD that someone had been arrested in the assassination attempt at the Texas School Book Depository. Back in Dallas Barker announced another report of the death of the