Where alarms and bulletproof glass fail, steel-reinforced doors disguised as custom woodwork use brute strength to stop even the most determined burglar. Add high-security locks and drill-resistant concrete, and you have a high bar of protection. Roofs are particularly vulnerable, as they are often the least-fortified part of a residential structure. Gaffco Ballistics will install saw- and bullet-resistant Kevlar plates to thwart potential attackers.