National Mass Violence Victim Resource Center
The NMVVRC advances understanding of the scope, nature, and mental health impact of exposure to mass violent crimes through ongoing research into best practices nationwide.
Office for Victims of Crime ~ https://ovc.ojp.gov/news/announcements/view-resources-victims-recent-mass-violence-incidents
If your area or school has suffered a mass violence incident, click the link above. The most current incident will be on top. Each incident and location have specific resources available for assistance.