Trio at PerryThree members of the local National Guard Armory have joined six others from Penn-'sylvania for the National, Rifle Association's High-Power Rifle ■ Championships at Camp Perry. Ohio, continuing through Thursday.; The trio. Deknar Decker of iLockport. Donald Floruss. Mill j Hall and Larry Shade cl Avis, was selected during tryouts held at the local armory in March.The National Matches, a join! endeavor of the U.S. Armed Forces, the National Rifle Association and the National Board for the Promotion of Rifle , Practice, bring together more than six thousand shooters who will fire in shoulder-to-shoulder competition. The matches, which include the high-power rifle pc*.ol and small - bore j rifle matches, are held annaual-ly at Camp Perry.The three local men. with 2.600 others, represent this nation's top high-ipower rifle shooters. They will compete! for honors and awards on rifle%ranges varying from 200-1000