A KINGSPORT HIGH SCHOOL STUDENT WHO SUFFERED SERIOUS HEAD INJURIES IN A RECENT ACCIDENT HAS DIED. FELLOW STUDENTS, FAMILY, AND FRIENDS ARE MOURNING THE DEATH OF 18 YEAR OLD JON METCALF. METCALF WAS A STUDENT AT DOBYNS-BENNETT HIGH SCHOOL. HE SUSTAINED A SERIOUS BRAIN INJURY LAST WEEK AFTER FALLING OFF A MOVING GOLF CART AND HITTING THE BACK OF HIS HEAD ON CONCRETE. FUNERAL ARRANGEMENTS HAVE NOT YET BEEN ANNOUNCED.