[Top Black Business Leader Series] Largest Black-Owned Security Firm in the Nation – Humble Beginnings to Over 1000 Staff with John and Dr. Denitra Griffin of AGB Investigative Services

John and Dr. Denitra Griffin are Co-Founders of the largest black-owned security firm in the United States, AGB (Always Giving Back) Investigative Services. John is the CEO of the AGB Investigative Services and Dr. Griffin is the President. John and Dr. Griffin founded AGB Investigative Services in 2001. They offer expertise in all aspects of […]