"Marvin Hubbard" . "Escape attempt failed" . "U.S. Coast Guard" . "11 wounded" . . "Bernard Coy" . . "The Battle of Alcatraz, which lasted from May 2 to 4, 1946, was the result of an unsuccessful escape attempt at Alcatraz Federal Penitentiary. Two guards\u2014William A. Miller and Harold Stites\u2014were killed along with three of the inmates. Eleven guards and one uninvolved convict were also injured. Two of the surviving convicts were later executed for their roles."@en . . "California State Police" . "2 killed" . . "Battle of Alcatraz"@en . "U.S. Marines" . . "Guards" . . "Joseph Cretzer" .