On November 22, 1963, during a planned two-day, five-city tour of Texas, President John F. Kennedy was assassinated while traveling in a motorcade through Dallas, Texas. This statement by President Lyndon B. Johnson was written aboard Air Force One during the flight back to the nations capital, just hours after the assassination, and after the the oath of office was administered to Johnson. The President delivered the statement upon landing at Andrews Air Force Base outside Washington, DC.
Read more at the Kennedy Presidential Library