This retiring Alcatraz ranger spent more time on the Rock than any prisoner
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Park Service Ranger John Cantwell has served more time on Alcatraz Island (30 years) than the longest-serving inmate, Alvin “Creepy” Karpis (26 years).Carl Nolte/The ChronicleShow MoreShow Less
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Ranger John Cantwell has been a force at Alcatraz. For years, he organized reunions, bringing back former inmates, former guards and families who lived on the island.Carl Nolte/The ChronicleShow MoreShow Less
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Ranger John Cantwell unlocks the door to a cell at Alcatraz. Among his accomplishments, he talked a private prison company into repairing all the locks in the main cellblock.Lea Suzuki/The Chronicle 2018Show MoreShow Less