Terror War Boosts Government Demand for Offices That Can Safeguard and Process Classified Data Pssst! Business is booming for buildings that can keep secrets. Thanks to the war on terrorism, offices designed to safeguard data, process classified information and keep conversations private are being leased by federal defense and intelligence contractors in the national capital region as fast as developers can build them, authorities say. Some rooms have walls lined with steel or made of 8-inch-thick concrete to meet federal requirements. Other security standards mandate elaborate alarm systems, sound-masking technology and vent grates to block intruders. The government calls such...