GOLD HILL — Retired Air Force pilot Ron Schreck completed an N.C. aviation milestone for the Fourth of July: He touched down at all 109 public-use airports in the state in a day. Schreck took off just before midnight from Gold Hill Airpark, where he lives, and finished his feat in 19 hours and 51 minutes at 8:09 p.m. — plenty of time before any fireworks might have interfered with his flight plan. He said the idea sprouted from hangar talk after he noted the number of airports in a state Department of Transportation booklet. Schreck said he contacted Tom...