JFK at 100: A legacy etched in minds of Americans

John F. Kennedy -- young, heroic, charismatic -- embodied the overflowing promise of possibility of 20th century America, until an assassin's bullet ended his life in November 1963.One hundred years after his birth, the youngest man ever elected president, who once urged Americans to strive for the "New Frontier," is still a political icon, and the country is celebrating his legacy, which lives on most visibly in his family."It's an opportunity to reflect on what president Kennedy stood for, and