Original: Robert Strange McNamara ( June 9 , 1916 & ndash ; July 6 , 2009 ) was an American business executive and the eighth Secretary of Defense , serving under Presidents John F. Kennedy and Lyndon B. Johnson from 1961 to 1968 .
Simplified: Robert Strange McNamara ( born June 9 , 1916 , in Oakland , California ) is an American business executive and former United States Secretary of Defense .