The Critical Difference™

Expert Insights: Articles by CIS Professionals

 Workplace Violence and Active Shooter Risk Management

 School Security

Crime Prevention & Safe Communities

 Physical Security Design & Technology

Forced Entry Standards

The following article is provided as a technical reference to assist architects and security professionals in applying forced entry standards and/or evaluating the vulnerability of

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Bullet Resistance Standards

The following article is provided as a technical reference to assist architects and security professionals in interpreting bullet-resistance standards and/or evaluating the vulnerability of existing 

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