Retired NCIS Special Agent Leon Carroll stands in his office amongst memorabilia collected during his time with the agency.
250305-N-CK721-0057.JPG Photo By: Bill Krumpelman

Dec 5, 2025
QUANTICO, Va. - Leon Carroll, Jr. poses for a photo at his home in Long Beach, California. Leon was an NCIS Special Agent for 21 years before he became the technical advisor for CBS' 'NCIS' television franchise.


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