Nation IN BRIEF : NEW HAMPSHIRE : 2 Wing Walkers Die in Stunt Plane Crash

A stunt plane crashed and exploded at an air show in Concord, killing a father-daughter wing walking act, authorities said. Several thousand spectators saw the crash at Concord Airport, but nobody in the crowd was hurt when the plane came down several hundred yards away. Witnesses said the plane came out of a roll at about 100 feet when something went wrong. Air show announcer Frank Kingston Smith said the father was piloting the plane from a rear cockpit while the daughter was waiting to get onto the wing. Police identified the father as Ronald Shelly, 61, of Midland, Va., and the daughter as Karen Shelly Duggan, 31, of Warrenton, Va.