Boxing great Muhammad Ali is helped by his wife, Lonnie (right), as he looks down from a balcony at friends attending a celebration honoring his 70th birthday at the Muhammad Ali Center in Louisville, Ky., on Saturday, Jan. 14, 2012. He turned 70 on the following Tuesday. (AP Photo/Mark Humphrey)

Photo by: Mark Humphrey

Boxing great Muhammad Ali is helped by his wife, Lonnie (right), as he looks down from a balcony at friends attending a celebration honoring his 70th birthday at the Muhammad Ali Center in Louisville, Ky., on Saturday, Jan. 14, 2012. He turned 70 on the following Tuesday. (AP Photo/Mark Humphrey)