McMahan faces a mandatory minimum term of 10 years to life in prison, fines up to $10,000,000, and a mandatory minimum term of five years to life of supervised release.
During the course of the eight-year conspiracy, McMahan obtained bulk quantities of marijuana from numerous sources, which he then further distributed to numerous individuals in the Eastern District of Tennessee and elsewhere. He also received kilogram quantities of cocaine from several sources, which he distributed to numerous individuals. McMahan supplied money to co-defendants and co-conspirators to fund trips to Florida pain clinics during which time the co-defendants and co-conspirators obtained prescriptions for oxycodone, which was then distributed by McMahan and others. Further, McMahan engaged in financial transactions involving the proceeds of the illegal distribution of cocaine and marijuana, which transactions involved both bulk currency and the transfer of personal property.
FBI press release link: here