John F. Kennedy assassination rifle HSCA tests proved conclusively that the claim was not accurate. In 1972 the Kennedy family chose John K. Lattimer, MD as the first nongovernmental expert to examine evidence taken at Kennedy's autopsy. Lattimer performed ballistic tests and other research to prove that Lee Harvey Oswald was likely the sniper who shot and killed President John F. Kennedy from the Texas School Book Depository in Dallas. Dr. Lattimer frequently performed a demonstration of Oswald's shooting, firing three well-aimed shots within 8.3 seconds with Carcano M91/38 and under the same firing conditions. By doing so Dr. Lattimer intended to prove that Oswald
Timeline of the presidency of John F. Kennedy Timeline of the presidency of John F. Kennedy The presidency of John F. Kennedy began on January 20, 1961, when John F. Kennedy was inaugurated as the 35th President of the United States, and ended on November 22, 1963, upon his assassination and death, a span of . A Democrat, he took office following the 1960 presidential election, in which he narrowly defeated Richard Nixon. He was succeeded by Vice President Lyndon B. Johnson, who served out the remaining of Kennedy's term, and was elected to the presidency in his own right in 1964. This timeline begins on January 2,