Gang problems

US gang expert shares knowledge with Tonga

"It was an unbelievable experience," he said. "It was an honor to try to share my experience over the years to help the Tongans."

Duffy, a 21 year-veteran with the Douglas County Sheriff's Office, spent the first several years of his career working for the Los Angeles Sheriff's Department. Part of his time there was spent working at the notorious Men's Central Jail, which he said is the largest jail in the country. Duffy is also one of the founders of Douglas County's Tri-County Gang Unit, which includes representatives from Lyon County and Carson City.