Blum won more than 4,000 races in a 22-year career, but his most famous ride was the 1971 Belmont Stakes, when he rode 34-1 long shot Pass Catcher to an upset victory.
“For the first time, we can envision embracing them again,” the Hostages and Missing Families Forum, a group created to lobby for the captives, said in a statement about their loved ones.