Boxing great Muhammad Ali waves after being awarded the Liberty Medal, as his wife Lonnie (L) and sister-in-law Marilyn Williams (R) look on, at the National Constitution Center in Philadelphia, Pennsylvania September 13, 2012. Ali, retired world heavyweight title holder, received the $100,000 award, sponsored by the nonprofit National Constitution Center, in recognition for his humanitarian efforts and work for civil rights at an awards ceremony on Thursday. [Photo/Agencies]