Mark Oliver and Grant Burns founded Shield Security Consultants and Protection Services LLC. Combined they have over twenty-five years in Law Enforcement, with twenty one years of expertise and experience in Executive Protection. Assigned to protect multiple local, state and federal officials as well as numerous corporate executives. With the Detroit Police Department their missions included working with the Violent Crime task force, City Council Security, Executive Protection Unit and Officer In Charge of Executive Protection for the Chief of Police, protect multiple local, state and federal officials as well as numerous corporate executives. Their combined training includes Dignitary/Diplomatic protection, Counter-Terrorism, Interviewing/Interrogating courses, Crime Prevention, and Advanced Defensive Driving, and Active Shooter.