12/15: Conn. school massacre: New details, new horror
December 15, 2012 5:32 PM
Newtown, Conn., is now the grief-stricken home of the second deadliest school shooting in U.S. history. Twenty young children and six adults were gunned down at Sandy Hook Elementary School by 20-year-old Adam Lanza. We have the latest details on this still developing story in this edition of the CBS Evening News.