A Jackson man was sentenced Monday to four years in prison on one count of being a felon in possession of a firearm. Kenneth Shoemaker, 22, appeared before U.S. District Judge Jean Hamilton. He earlier had pleaded guilty to the charge, affirming that on March 7, 2003, investigators found in his vehicle a fully loaded Remington model 1100, 12-gauge semi-automatic shotgun behind the seat. Shoemaker said the gun belonged to his grandfather. Prior to his being in possession of the firearm, Shoemaker had been convicted of the felonies of burglary and stealing.