Article Photos: Preparation for mass shooting events responsibility of police and public, Oklahoma officials say 30/47

Law enforcement canvass an area nearby a school shooting at Sandy Hook Elementary School in Newtown, Conn. where authorities say a gunman opened fire, leaving 27 people dead, including 20 children, Friday, Dec. 14, 2012. (AP Photo/Jessica Hill) ORG XMIT: CTJH111