The last of 10 defendants in an Augusta-area drug trafficking conspiracy has been sentenced to more than a decade in federal prison. Justin Wayne Fields, 40, of Swainsboro, Ga., was sentenced to 168 months in prison after pleading guilty to Conspiracy to Possess with Intent to Distribute, and to Distribute, Methamphetamine and Heroin, said Jill E. Steinberg, U.S. Attorney for the Southern District of Georgia. U.S. District Court Chief Judge J. Randal Hall also fined Fields $2,500 and ordered him to serve three years of supervised release upon completion of his prison term. There is no parole in the federal system.