A U.S. flag flies at half staff in front of the Reed Intermediate School in Newtown, Connecticut, following a shooting nearby at Sandy Hook Elementary School, December 14, 2012. A heavily armed gunman opened fire inside a Connecticut elementary school on Friday, killing 26 people, including 20 children, police said, in one of the worst mass shootings in U.S. history. REUTERS/Lucas Jackson (UNITED STATES – Tags: CRIME LAW EDUCATION)