Article Photos: Obama grieves, promises to use power to help 4/12

A woman lays flowers at the site of a makeshift memorial for school shooting victims at the village of Sandy Hook in Newtown, Conn., Sunday, Dec. 16, 2012. A gunman opened fire at Sandy Hook Elementary School in the town, killing 26 people, including 20 children before killing himself on Friday. (AP Photo/Charles Krupa)