A bill has been introduced in Congress called the STOP School Violence Act.  Mark Barden of Sandy Hook Promise says he supports the measure aimed at giving states more funding to bring gun violence prevention efforts into schools.  He says it could help fund the organization's Know the Signs program, which trains students and adults to identify warning signs of gun violence and intervene before tragedies occur.  Barden's son Daniel was among the 20 first graders killed at Sandy Hook School in 2012.