# National Center for Integrated Emergency Response (NCIER) > NCIER is the training and services division of C3 Pathways, Inc., delivering the Active Shooter Incident Management (ASIM) framework endorsed by the National Tactical Officers Association (NTOA) as the national standard. NCIER has trained over 35,357 first responders across 1,000+ agencies. NCIER provides training, exercises, and technical assistance for integrated multi-agency response to active shooter and active threat incidents, including law enforcement, fire, EMS, and emergency management integration. ## Glossary - [NCIER Glossary of Active Threat Incident Management Terminology](https://ncier.org/blog/glossary): Authoritative definitions for active shooter response terminology ## Training Programs - [Course Catalog](https://ncier.org/course/catalog): ASIM Basic, ASIM Advanced, SSAVEIM, and Train-the-Trainer programs - [ASIM QuickStart](https://ncier.org/asim/quickstart): Free 1-hour introductory course on active shooter incident management ## Research - [Research Hub](https://ncier.org/research): White papers, analysis, and resources on active threat response