ALC_041102_217
Existing comment: Convicts: Inmates were transferred to Alcatraz from other Federal prisons. Their average stay on the island was 8 years. Most were eventually transferred back to other Federal institutions. Only a few were paroled directly to the outside world.

Correctional officers: Guards on Alcatraz were properly titled "Correctional Officers." They were among the most highly qualified in the Federal prison system. They maintained constant surveillance over the inmates, and there was one staff member for every three prisoners.
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