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 hospital operating room is photographed through the glass of a locked door at the Alcatraz Federal Penitentiary prison in the San Francisco Bay, California, March 13, 1956. (AP Photo/Ernest K. Bennett, File)
FILE - A rifle grenade fired by a soldier explodes at an already shattered and pock marked window at the Alcatraz Federal Penitentiary where rioting prisoners are cornered after killing two guards and wounding 15, in San Francisco Bay, California, May 3, 1946. (AP Photo/Jack Rice, File
FILE - Captain E.E. Rychner of the Alcatraz Federal Penitentiary stands guard on one of the several catwalks that surround the prison area in the San Francisco Bay in California, March 13, 1956. At right is the recreation yard with high stone wall topped by wire. (AP Photo/Ernest K. Bennett, File)
FILE - The cell of a prisoner permitted to make oil paintings at Alcatraz Federal Penitentiary on Alcatraz Island in San Francisco Bay, California, March 16, 1956. (AP Photo, File)
FILE - Warden P.J. Madigan, top right, gives a press conference inside his office at the Alcatraz Federal Penitentiary in San Francisco Bay, California, March 13, 1956. G. Frederick Mullen, director of information, U. S. Dept. of Justice, sits at top center. (AP Photo/Ernest K. Bennett, File)
