How a door-lock video got 20 million views on Facebook

A Grandview-based security firm distributes the intruder-blocking product that has stormed social media.

A 47-second Facebook video about school and workplace safety has surged to 20 million views. What’s the fuss?

It’s about a simple tool that can keep violent intruders out of classrooms, hospital suites and other public spaces recently overrun by active shooters.

The product, known as the Barracuda Intruder Defense System, is distributed locally by Strategos International of Grandview, Mo. Strategos has offered the product to its clients for about 18 months.

Strategos provides intruder response training for schools, churches and businesses. It also evaluates workplaces for security threats and offers in-person protection for CEOs, public figures and others facing threats to their safety or reputation. The company has trained more than 75,000 employees in intruder response in industry, education, churches, government and law enforcement.