Your Home Is Your Fortress? Maryland Firm Bets a 'Safe Room' Boom Is at Hand By Ellen McCarthy Washington Post Staff Writer Monday, March 3, 2003; Page E01 You can keep your duct tape and your flimsy gas masks. Jeff Quante prefers steel. Several thousand pounds of it, actually, with reinforced screws and bullet-resistant glass. It should be big enough for at least two people, protected with high-security locks and attached to an air purification system. And if that steel is painted silver with black accents like a Cadillac -- well, all the better. The safe-room business is not big;...