White County officials are searching now for a 15-year-old boy who went missing this afternoon at 1:45.  The youth, who is mentally challenged and needs medication, left his residence this afternoon on foot.  He is described as approximately 6 feet tall…slender with a green and maroon shirt and jeans with short curly hair.  White County deputies say the young man is on foot and possible barefoot.  The young boy left the residence from the Bon-Air Community which is near the Cumberland – White County Line – If anyone sees the youth, you are advised to call White County Sheriff’s Department at 931-738-7111.