Sarah C. Peck is the Co-founder and Director of UnitedOnGuns, a non-partisan initiative of the Public Health Advocacy Institute at Northeastern University School of Law. She co-authored the Mass Shooting Protocol & Playbook, a resource for mayors and city leaders responding to mass violence. A recognized expert in the field, she advises government and professional organizations on mass casualty preparedness and response. A former U.S. diplomat with 15 years of service, she previously worked as an attorney. She holds a BFA from the University of Florida and a JD from Northeastern University School of Law.