Visitors line up to pay their respects at the gravesite of Sen. Edward Kennedy, a day after his burial in Arlington National Cemetery. Mandel Ngan/AFP/Getty Images hide caption

itoggle caption Mandel Ngan/AFP/Getty Images

In this photo taken circa 1962, U.S. Attorney General Robert Kennedy (from left) talks with his brothers, U.S. Sen. Edward Kennedy and President John F. Kennedy. Hulton Archive/Getty Images) hide caption

itoggle caption Hulton Archive/Getty Images)