John F. Kennedy Jr. assassinated in 1968, his mother took him and his sister out of the United States, saying: "If they're killing Kennedys, then my children are targets ... I want to get out of this country." The same year, she married Greek shipping tycoon Aristotle Onassis, and the family went to live on his private island of Skorpios. Kennedy is said to have considered his stepfather "a joke". In 1971, Kennedy returned to the White House with his mother and sister for the first time since the assassination. President Richard Nixon's daughters gave Kennedy a tour that included his old bedroom, and
Alexander Onassis relationship with Fiona Thyssen, former wife of Hans Heinrich Thyssen-Bornemisza. He was later appointed the head of Olympic Aviation, a Greek regional airline owned by his father. Onassis died in hospital as a result of injuries sustained in an air crash at Hellinikon International Airport at the age of 24. The Alexander S. Onassis Foundation was established in his memory. Alexander Socrates Onassis was born at the Harkness Pavilion, a private clinic in New York City's NewYork–Presbyterian Hospital. He was the elder child of the Greek shipping magnate Aristotle Onassis (1906 –1975) and his first wife, Athina Livanos (1929 –1974),