Alcatraz Island Engineers began fortifying the island, work which continued until 1858, eventuating in Fortress Alcatraz. The island's first garrison at Camp Alcatraz, numbering about 200 soldiers and 11 cannons, arrived at the end of that year. When the American Civil War broke out in 1861, the island mounted 85 cannons (increased to 105 cannons by 1866) in casemates around its perimeter, though the small size of the garrison meant only a fraction of the guns could be used at one time. At this time it also served as the San Francisco Arsenal for storage of firearms to prevent them falling into
Legends of Alcatraz occurred in the area that Henri Young had murdered Rufus McCain, stabbing him in the neck. Despite former guards and park rangers revealing their paranormal experiences at Alcatraz, officials for Alcatraz have publicly dismissed the reports of ghosts at Alcatraz as nonsense and deny their existence; an official for Alcatraz said in 1994, "These ridiculous ghost stories will stop tourists from visiting. And how can these people say they heard canaries? We don't have any birds in here." Mary Forgione of the "Los Angeles Times" also stated that "The National Park Service, which operates the island as a tourist site,