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
Presidency of John F. Kennedy Presidency of John F. Kennedy The presidency of John F. Kennedy began on January 20, 1961, when Kennedy was inaugurated as the 35th President of the United States, and ended on November 22, 1963, upon his assassination, a span of days. 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. Kennedy's time in office was marked by Cold War tensions with the Soviet Union and Cuba. In Cuba, a failed attempt was made in April 1961 at the Bay of Pigs to overthrow