Security Professionals of Illinois, Inc. (S.P.I.), a U.S. Marine Corps veteran-owned business, has been serving the Midwest since May 2003. Working individually or as a team, our security team has a wealth of experience in military and law enforcement training and are fully licensed, security professionals. We combine experience with the very latest in training and theory to produce a dynamic and unique service for whatever your needs may be. We employ proactive strategies that mitigate security vulnerabilities and risks. Our security professionals are certified, licensed, and insured. S.P.I. has built a reputation for providing unmatched service because of the professionalism of our team, commitment to quality service, and our ability to execute on every assignment-every time.