EPISODE · Apr 27, 2026 · 18 MIN
Ep 123: Who's Running Your Perimeter?
from C3 Podcast: Active Shooter Incident Management · host Bill Godfrey, Kevin Beary, Kevin Nichols
Where should the Perimeter Group Supervisor actually be in an active shooter response: standing a post on the perimeter, or inside the command post? In this episode of the Active Shooter Incident Management Podcast, Bill Godfrey is joined by Sheriff Kevin Beary and Assistant Chief Kevin Nichols to answer a listener question from a Canadian officer about the Perimeter Group Supervisor’s position and responsibilities as an incident grows. They cover: Why the answer depends on time into the incident and available resources When the Perimeter Group Supervisor may need to stand a perimeter post and run double duty early on Why, as staffing builds, moving that role into the command post reduces radio relays and miscommunication How to hand off the role from a line officer to a supervisor without disrupting inner and outer perimeters Managing crowds, parents, and large campuses when the outer perimeter expands Practical span‑of‑control cues that tell you it’s time to split inner/outer perimeter or add an aide Why perimeter is a critical problem‑solving role, not just where you send people who didn’t make the contact team If you’re assigning perimeter, running the command post, or training others on ASIM, this is a useful discussion for your next training, policy review, or tabletop. View this episode on YouTube at: https://youtu.be/Gd94JCk8rPc Like what you hear? Drop a review and subscribe to our Podcast Channel. If you have questions, you can send them to [email protected] with “Podcast Question” in the subject line. Check out our websites and learn more about C3 Pathways / NCIER by going to: https://www.c3pathways.com or https://www.ncier.orgThe Active Shooter Incident Management Podcast is owned by C3 Pathways and NCIER. None of the content presented may be copied, repurposed, or used without the owner’s prior consent.
What this episode covers
Where should the Perimeter Group Supervisor actually be in an active shooter response: standing a post on the perimeter, or in the command post? In this episode, Bill Godfrey is joined by Sheriff Kevin Beary and Assistant Chief Kevin Nichols to answer a listener question from a Canadian officer about positioning the Perimeter Group Supervisor, transitioning the role from a line officer to a supervisor, managing inner and outer perimeters as crowds and campuses grow, and recognizing when span of control is too large and needs to be split or supported.
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Ep 123: Who's Running Your Perimeter?
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