School adviser: Gunman a loner who felt no pain - Article Photos 1/5

Andrea Jeager, of Hesperus, Colo., says a prayer as she places flowers and a candle at a makeshift memorial at a sign for the Sandy Hook school, Saturday, Dec. 15, 2012 in Sandy Hook village of Newtown, Conn. The massacre of 26 children and adults at Sandy Hook Elementary school elicited horror and soul-searching around the world even as it raised more basic questions about why the gunman, 20-year-old Adam Lanza, would have been driven to such a crime and how he chose his victims. (AP Photo/Mary Altaffer)