Sentry Security Agency Inc

SecurityStL.com is a family-owned group of security businesses operated by the Mueller Family in St. Louis that brings decades of public-safety and private-security experience—including multiple generations of U.S. Marines and St. Louis Metropolitan Police—together under one umbrella; the company includes ACF Alarm (professional alarm service and installation since 1974), Sentry Security (on-site security officers for commercial and residential customers), One2Verify (corporate employment background screening), and United Fire Alarm System (UL-certified fire alarm service, installation, and monitoring), and the company supports community outreach through the North Patrol Police & Business Partnership while providing local security, alarm, fire-safety, and screening solutions from its St. Louis headquarters.