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Insights, updates, and thought leadership on public safety training.

NCIER Glossary

Authoritative definitions for 5 terms used in active shooter response and emergency management.

Outer Perimeter Inner Perimeter Cold Zone Warm Zone

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NIMSPro classroom active shooter training

Articles

Jun 27, 2026 • 5 min read

What NIMSPro Actually Does (And Why We Won't Sell It to Most People)

NIMSPro is the 3D simulation system C3 Pathways built to power its ASIM Advanced training. It puts an entire team of res...

Sheriff Dennis Lemma press conference about Active Shooter Incident Management (ASIM) Advanced training

Webinars & Video Training

May 26, 2026 • 8 min read

Sheriff Dennis Lemma on ASIM Training: Unified, Real World Active Shooter Readiness

Oviedo, FL. Press Conference. In this video, Seminole County Sheriff Dennis Lemma shares why he believes NCIER’s Active...

Two school administrators stand in a hallway discussing lockdown

Articles

Apr 30, 2026 • 8 min read

Lockdowns Work. Here’s Why They Still Aren’t Enough for School Readiness.

This article explains that while lockdowns and locked classroom doors are proven life‑savers, they are only one piece of...

Thumbnail a busy 911 dispatch center is pictured with large electronic wall displays

Articles

Mar 31, 2026 • 4 min read

Your Dispatch Center Is the Initial Intelligence Hub in a Hostile Event

During an active shooter or hostile event, your dispatch / 911 center is not a background support function. It is the in...

Articles

Mar 30, 2026 • 7 min read

When to Transition to Unified Command in an Active Shooter Incident

When should an active shooter incident move from a single incident commander to unified command? There is no magic time...

Webinars & Video Training

Mar 29, 2026 • 11 min read

When Does One Leader Become a Team? Understanding Unified Command in Active Shooter Response

This video addresses a question recently asked by a police chief who was drilling into the Active Shooter Incident Manag...

Dispatch & 911: The Missing Backbone in Active Shooter & Hostile Event Response

Webinars & Video Training

Mar 13, 2026 • 10 min read

Dispatch & 911: The Missing Backbone in Active Shooter & Hostile Event Response

For chiefs, 911 directors, and public safety leaders, there’s a critical piece of active shooter and hostile event readi...

Video What's New in Checklist v3.0 for Active Shooter Incident Management

Webinars & Video Training

Jul 30, 2019 • 30 min read

What’s New in the ASIM Checklist 3.0: Key Changes for Law Enforcement & Reunification

This video walks through the major updates in Version 3.0 of the Active Shooter Incident Management (ASIM) Checklist and...

Webinars & Video Training

Jul 30, 2019 • 10 min read

How to Use the ASIM Checklist: Radio Traffic Walkthrough Demo

This video is a step‑by‑step explainer of the Active Shooter Incident Management (ASIM) Checklist using real‑style radio...

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NCIER Glossary

What NIMSPro Actually Does (And Why We Won't Sell It to Most People)

Sheriff Dennis Lemma on ASIM Training: Unified, Real World Active Shooter Readiness

Lockdowns Work. Here’s Why They Still Aren’t Enough for School Readiness.

Your Dispatch Center Is the Initial Intelligence Hub in a Hostile Event

When to Transition to Unified Command in an Active Shooter Incident

When Does One Leader Become a Team? Understanding Unified Command in Active Shooter Response

Dispatch & 911: The Missing Backbone in Active Shooter & Hostile Event Response

What’s New in the ASIM Checklist 3.0: Key Changes for Law Enforcement & Reunification

How to Use the ASIM Checklist: Radio Traffic Walkthrough Demo

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