GAMBRILLS, Md. — In 1965 a 20-year-old Massachusetts man raised his right hand and stepped into a world of secrets with the United States Navy.

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For over two decades John Perry served as a military cryptologist, a career that took him all over the globe, from Europe to Japan.

Perry eventually earned the rank of Senior Chief, putting him in charge of hundreds of sailors.

Courtesy of Chief John I. Perry Retired U.S. Navy Senior Chief, John I. Perry served 24 yrs, from 1966 to 1990. This is Chief Perry, as a 21-year-old Seaman, before heading to his first assignment in the Aleutian Islands in Adak Alaska. Chief Per

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