President John F. Kennedy was assassinated on November 22, 1963 while riding in a motorcade through Dealey Plaza in Dallas, Texas. He was shot and pronounced dead shortly after arriving at Parkland Memorial Hospital. Vice President Lyndon B. Johnson was sworn in as the new President aboard Air Force One later that day. Lee Harvey Oswald was arrested for the assassination but was then shot and killed by Jack Ruby two days later. President Kennedy's funeral was held in Washington D.C. and Arlington National Cemetery and was attended by world leaders and millions of mourners.