Article Photos: Oklahoma City-area school districts say security is beefed up

A U.S. flag flies at half-staff on Main Street in honor of the people killed when a gunman opened fire inside a Connecticut elementary school, Saturday, Dec. 15, 2012, in Newtown, Conn. (AP Photo/David Goldman) ORG XMIT: CTDG103

A U.S. flag flies at half-staff on Main Street in honor of the people killed when a gunman opened fire inside a Connecticut elementary school, Saturday, Dec. 15, 2012, in Newtown, Conn. (AP Photo/David Goldman) ORG XMIT: CTDG103