ORANGE, Va. (AP) — In the shadow of James Madison's Montpelier, archaeologists and metal-detecting hobbyists are teaming up to unearth the history that lies beneath the 2,650-acre Virginia estate. Armed with high-tech equipment and age-old tools, these oft-rivals are rediscovering land belonging to the nation's fourth president and using history to bridge the gap between their communities. "There's always been kind of a disparity.