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
John F. Kennedy the Presidency. Joe's death during the war in 1944 changed that course and the task now fell to the second eldest of the Kennedy siblings – John F. Kennedy. At the urging of Kennedy's father, U.S. Representative James Michael Curley vacated his seat in the strongly Democratic 11th congressional district of Massachusetts to become mayor of Boston in 1946. With his father financing and running his campaign, Kennedy won the Democratic primary with 12 percent of the vote, defeating ten other candidates. Though Republicans took control of the House in the 1946 elections, Kennedy defeated his Republican opponent in the