Prior to the shootings in Newtown, Connecticut, the Sandy Hook Elementary School installed some new security measures: an electric lock, intercom and video camera at the front door. After students arrive the door locks at 9:30 AM and thereafter, a person seeking admittance will have to talk to the officemarm and be buzzed in.
Such equipment might keep out the mild-mannered Fred Rogers but what if the person huffing and puffing at the door is more like the Big Bad Wolf? What then little pig? Is your house made of bricks, or straw?

