A JOHNSON CITY MAN WHO ADMITTED TO POSSESSION OF A FIREARM AND AMMUNITION BY A CONVICTED FELON IS HEADED TO PRISON. 44 YEAR OLD ARTHUR ANDREW NELSON WAS ORDERED TO SERVE 17 AND A HALF YEARS BEHIND BARS TO BE FOLLOWED BY FIVE YEARS OF SUPERVISED PROBATION. AN INVESTIGATION BY THE WASHINGTON COUNTY SHERIFF’S OFFICE REVEALED NELSON HAD BEEN IN AN UNLAWFUL SEXUAL RELATIONSHIP WITH A JUVENILE AS WELL AS TRANSFERRING FIREARMS TO THE SAME JUVENILE. NELSON WAS A TWICE CONVICTED FELON.