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Alcatraz is an island located in the San Francisco Bay, 1.5 miles (2.4 km) offshore from San Francisco, California. The small island was developed with facilities for a lighthouse, a military fortification, a military prison, and a federal prison from 1933 until 1963. Dr. Rodney McKay compared the prison island on the planet Olesia to Alcatraz. (SGA: "Condemned")