Some Rhode Island school districts are reviewing their safety procedures after the deadly school shooting in Florida on Wednesday.  School systems in the state are required by law to annually update their safety plans and submit them to the Department of Education.  The state law was updated after the Columbine High School shooting in Colorado in 1999 and again after the Sandy Hook shooting in Connecticut in 2012.  North Providence schools have a system that detects gunshots and immediately calls 911.