The family of a missing Brookston man will be conducting a ground search today for 34-year-old Joseph Zak. Zak, who is autistic, was last seen at a group home in Brookston about 30 miles northwest of Duluth on December 7th. He had lived at the home for several years. Authorities say Zak is about 6 feet tall and weighs about 325 pounds. He had just shaved his beard before he left the group home. Anyone with information should contact authorities.