SPI - Security Personnel Inc - Security Guards and Loss Prevention... Home About SPI Services News & Security Employment Contact Us 2008 2009 2010 Master Mettle We have been... helping SE Wisconsin business feel secure for over 40 years. We're a local group of dedicated security professionals who proactively provide a wide range of security services. Our... people make us the safe choice. Call (262) 252-2500 2012 Security Personnel, Incorporated. All Rights Reserved. | Privacy Statement Employee Scheduling Portal ...