Critical Intervention Services

05/15/2025

We remember...

11/21/2024

We will never forget your love, devotion, and service to your family, friends, and to your community. We miss you brother, rest well until we meet again 🙌🏻

06/05/2024

Never Forget.

03/12/2024

/PRNewswire/ -- In a landscape where safety and compliance are more critical than ever, Critical Intervention Services (CIS) stands out not only as a leader...

11/08/2023

https://www.cisworldservices.org/2023/09/active-shooter-response-training-tips/

Even the best-designed plans and preparations will be of little benefit if employees are unprepared to take independent action during active shooter attacks.

10/18/2023

Protecting Facilities Against Violent Intrusion Webinar Video

The following webinar was presented in response to the 2021 Capitol Hill Riot and delivered on 23 February 2021 for a diverse audience of security professionals…

08/15/2023

https://www.cisworldservices.org/2017/03/security-officer-posting-and-active-shooter-attacks/

Security Officer Posting and Active Shooter Attacks: Most common problem is assignment of officers without proper consideration for tactical reaction time.

07/25/2023

https://www.cisworldservices.org/2020/03/anti-personnel-barrier-materials-and-construction/

Part 6 of the series surveys options and performance expectations for anti-personnel barriers (e.g., doors, locks, windows, etc.) during active shooter attacks.

07/18/2023

https://www.cisworldservices.org/2021/02/capitol-hill-riot-security-physical-design/

The failures at Capitol Hill underscore the importance of using performance-based physical security when protecting high risk facilities.

07/14/2023

https://www.attorneyatwork.com/personal-safety-for-lawyers/

Q&A | Ruth Carter talks with Craig Gundry, Vice President of Special Projects for Critical Intervention Services.

07/14/2023

For in-depth articles from CIS practitioners, please visit

The following articles by CIS professionals explore topics of workplace agression, terrorism, school violence, and other critical security topics.