FILE - In this Oct. 21, 2013 file photo, Attorney General Eric Holder listens to a speech after of his remarks during the Annual International Association of Chiefs of Police Conference, at the ... more 
FILE - In this Oct. 21, 2013 file photo, Attorney General Eric Holder listens to a speech after of his remarks during the Annual International Association of Chiefs of Police Conference, at the Pennsylvania Convention Center in Philadelphia. The FBI has helped to disrupt or prevent nearly 150 shootings and violent attacks in 2013 alone, in part by steering potential gunmen toward mental health professionals. There have been hundreds of these disruptions since 2011, Attorney General Eric Holder told an audience of police chiefs in October, touting the behind-the-scenes work of a small FBI unit based out of Quantico, Va. (AP Photo/Matt Rourke) less 
1 / 30
Associated Press | Photo By Matt Rourke
Mon, Dec 16, 2013 3:03 AM EST