2min Related Articles Summerville Police investigating collision at Dorchester Rd intersection Low Battery Seawall Restoration Project showcased by national engineer group Mayors from 4 Berkeley County municipalities talk growth, infrastructure Video: Do armed officers at schools make a difference?Since Sandy Hook, an estimated 20,000 armed officers have been employed in schools across the US. Yet, there’s no evidence it has made a difference. CNN’s Tom Foreman reports. CLICK HERE TO READ FULL ARTICLE