This year marks the 150th anniversary of the U.S. Civil War’s Campaign for Chattanooga, Tenn. Besides an impressive array of authentic cannon, the modern Chickamauga National Military Park Visitor Center, in Fort Oglethorpe, Ga., is guarded by Napco Dual Technology Detectors for their stronghold, fighting false alarms and providing superior detection in all sorts of conditions, including RF, sunlight, vehicle lights, lightning, HVAC shifts, and more — all factors in this glass-atrium building.