Services have been scheduled for Friday in Louisville for boxing legend Muhammad Ali, who died on Friday.
Former President Bill Clinton, comedian Billy Crystal and broadcaster Bryant Gumbel are scheduled to deliver eulogies.
Louisville Mayor Greg Fischer has ordered flags lowered to half-staff to honor Ali.
The three-time heavyweight champion had been hospitalized in the Phoenix area since last Monday with respiratory problems and his children had flown in from around the country.
A family spokesman says Ali died of septic shock "due to unspecified natural causes."
Ali dominated not just boxing but much of contemporary culture back in the 60's as an Olympic champion, a professional heavyweight champ and a leader of the civil rights movement.
President Barack Obama says Muhammad Ali "shook up the world, and the world is better for it."