From the National Journal: How does Someone Become a School Shooter?

"Of­ten, shoot­ers tell someone what they plan to do, an ac­tion known as “leak­age,” but fre­quently those com­ments aren’t con­veyed be­fore a shoot­ing oc­curs. Sandy Hook Prom­ise, a non­profit launched by those who lost loved ones in the Decem­ber 2012 mas­sacre, has launched a “Say something” cam­paign to en­cour­age middle- and high-school stu­dents to tell school of­fi­cials or other trus­ted adults if they see or hear threats or oth­er warn­ing signs."
Read more from the National Journal article here: http://bit.ly/1OJ8Eht