How realistic should school shooting drills be? - Article Photos 3/5

FILE - In this file photo of Jan. 28, 2013, members of the Washington County Sheriff's Office, the New York State Police and Hudson Falls Police Department approach the entrance to the Hudson Falls Primary School in Hudson Fall, N.Y., to practice drills with unloaded guns to prepare for the possibility of armed intruders at the school. School security has come under more scrutiny in the wake of the Sandy Hook Elementary School massacre in Newtown, Conn., that killed 26 people in December. (AP Photo/The Post-Star, Omar Ricardo Aquije, File)