Airman 3-c Jimmy D. Tidrick, son of Mr. and Mrs. John F. Tidrick of Midvale, is being reassigned to Lincoln AFB, Neb., following his graduation from the Air Force technical training course for supply inventory specialists. Airman Tidrick was trained to order and account for supplies and equipment through the use of punched card accounting machines and electronic data processing equipment.A graduate of Midvale High, he entered the service last May.