In 1960, The cold war continued to become colder as the two sides distrusted the other more and tried to influence other parts of the world. John Kennedy and Lyndon Johnson won the Presidency with one of the smallest margins in history (113,000 votes) out of 68.3 million. The sexual revolution of the 60s had begun with the use of birth control pills and Hugh Hefner opening the first of his Playboy Clubs in Chicago. The 'Flintstones' is shown on television for the first time and movies this year include 'The Magnificent Seven' and 'Psycho'. Notable technical achievements include the invention of the Laser and a Heart Pacemaker. France tests its first atomic bomb and joins those countries with nuclear bomb technology. Notable names that appear in the limelight that year include 'Cassius Clay' and 'Sir Francis Chichester'. The US sends the first troops to Vietnam to support the French in the fight against communist North Vietnam.