He was already in prison, but a federal judge tacked on another 20 years for Jamal Shakir.
Authorities said Shakir pleaded guilty to conspiracy and attempting to conduct a continuing criminal enterprise.
Shakir tried to reorganize and run his gang from the Metro jail back when he was in jail and waiting on his trial.
He sent letters to people ordering murders, fire bombings, and drug-related robberies.
One of them even asked about a flight school and privately owned helicopters that could be stolen.
Prosecutors said they believe he planned to land on the roof of the CJC in an elaborate escape attempt.
Shakir was already serving multiple consecutive life sentences for crimes which date back to 1994 and include several murders.
