FILE - Senior officer Melvin Kidney works within a 2-inch laminated bullet proof glass at the control center of the Alcatraz Federal Penitentiary in San Francisco Bay, California, March 14, 1956. He supervises all communications and has custody of arms, ammunition, tear gas, etc. (AP Photo/Ernest K. Bennett, File)
FILE - One of three cell tiers of individual cells at the main block of the Alcatraz Federal Prison on Alcatraz Island in San Francisco Bay, California, March 15, 1956. (AP Photo)
FILE - A typical prison menu is posted over the cafeteria-style table where prisoners receive their food at the Alcatraz Federal Penitentiary in the San Francisco Bay, California, March 13, 1956. (AP Photo/Ernest K. Bennett, File)
FILE - Prison guard Jim Lowrie stands an empty area of the Alcatraz Federal Penitentiary after the last prisoners were transferred to other prisons, on Alcatraz Island in the San Francisco Bay, California, March 21, 1963. (AP Photo, File)
FILE - The federal prison island Alcatraz, known as "The Rock," stands in the San Francisco Bay, California, July 21, 1950. (AP Photo, File)
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FILE - Senior officer Melvin Kidney works within a 2-inch laminated bullet proof glass at the control center of the Alcatraz Federal Penitentiary in San Francisco Bay, California, March 14, 1956. He supervises all communications and has custody of arms, ammunition, tear gas, etc. (AP Photo/Ernest K. Bennett, File)
FILE - One of three cell tiers of individual cells at the main block of the Alcatraz Federal Prison on Alcatraz Island in San Francisco Bay, California, March 15, 1956. (AP Photo)
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FILE - A typical prison menu is posted over the cafeteria-style table where prisoners receive their food at the Alcatraz Federal Penitentiary in the San Francisco Bay, California, March 13, 1956. (AP Photo/Ernest K. Bennett, File)
FILE - Prison guard Jim Lowrie stands an empty area of the Alcatraz Federal Penitentiary after the last prisoners were transferred to other prisons, on Alcatraz Island in the San Francisco Bay, California, March 21, 1963. (AP Photo, File)
