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Scott announced his retirement as San Francisco chief of police this morning after eight years.

The U.S. government’s presence on Alcatraz began in the 1850s, with construction of a fort bristling with cannons to defend San Francisco from hostile ships.

But in 1972, Congress created the Golden Gate National Recreation Area, and the island instead became one of San Francisco’s most beloved attractions.

San Francisco Mayor Daniel Lurie’s office directed inquiries about the Alcatraz proposal to the National Park Service, which did not immediately respond to a request for comment.

“It’s not ready. It is in no way, shape or form ready,” said Daniel Mulvad, 24, who lives in San Francisco and was visiting with guests from out of town.