FILE - This 1962 file photo provided by the FBI shows Clarence Anglin 28, of Montgomery, Ala., in San Francisco. Anglin is a bank robber believed to have escaped from Alcatraz Island Federal Prison. Fifty years ago, three convicted bank robbers who had dug out of their Alcatraz cells with spoons boarded a tiny raft made of raincoats, pulling off an unlikely escape from The Rock that made its way into prison lore, a book and a movie. A lone U.S. marshal still is trying to find whether Clarence Anglin, John Anglin or Frank Morris survived the treacherous crossing of San Francisco Bay and are alive. (AP Photo/FBI, File)