Each spring and fall, local U.S. Forest Service rangers conduct prescribed burns on national forest land. Most recently, they ignited a 5,000 acre burn in Rockingham, Augusta, and Pendleton counties, straddling the Virginia - West Virginia border. WMRA's Randi B. Hagi reports. Last Friday morning, a sleek yellow helicopter landed next to the Hone Quarry reservoir. In the distance, a hazy cloud of smoke began rising from the ridgeline. The helicopter crew – forest service folks from Arkansas –