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

The U.S. flag flies at half staff at the U.S. Embassy in London in reaction to the shootings at Sandy Hook Elementary School in Connecticut, Saturday, Dec. 15, 2012. (AP Photo / Sang Tan) ORG XMIT: LST132

The U.S. flag flies at half staff at the U.S. Embassy in London in reaction to the shootings at Sandy Hook Elementary School in Connecticut, Saturday, Dec. 15, 2012. (AP Photo / Sang Tan) ORG XMIT: LST132