Damian Williams, the United States Attorney for the Southern District of New York, announced that Roger Thomas Clark, a/k/a "Plural of Mongoose," "Variety Jones," "VJ," and "cimon," was sentenced to 20 years in prison today for conspiring to distribute massive amounts of narcotics as the top adviser to Ross Ulbricht, a/k/a "Dread Pirate Roberts," the owner and operator of the "Silk Road" online illicit black market.