Article Photos: Oklahoma City-area school districts say security is beefed up 100/197

Attendees release paper lanterns during a vigil for victims of the Sandy Hook School shooting, Sunday, Dec. 16, 2012, in Omaha Neb. A gunman walked into the elementary school in Newtown, Conn., Friday and opened fire, killing 26 people, including 20 children. (AP Photo/The Omaha World-Herald, Rebecca S. Gratz) MAGS OUT; ALL NEBRASKA LOCAL BROADCAST, TV OUT.  ORG XMIT: NEOMA102