LLANO - Before Orville and Wilbur Wright made the first manned, powered flight nearly 100 years ago, they tested their aeronautical theories on gliders. To celebrate the centennial of the brothers' revolutionary accomplishment, 44 glider pilots will embark on a transcontinental race next week, traveling 2,570 miles from Llano to Kitty Hawk, N.C. The racers and their sailplanes will take off from Great Western Soaring School in Llano on June 19 for the first leg of the trip, to Jean, Nev. The racers' arrival at Kitty Hawk 12 days later has been selected by the U.S. Park Service to be...