This annual report addresses the reporting requirements pursuant to section 554 of the FY 2021 National Defense Authorization Act (NDAA). Section 554 requires the DoD Inspector General (IG) to submit annual reports to keep Congress informed on findings and recommendations related to: (i) the effects of policies, programs, systems, and processes of the Department, regarding personnel, on diversity and inclusion in the Department and (ii) the effectiveness of such policies, programs, systems, and processes in preventing and responding to supremacist, extremist, and criminal gang activity of a member of the Armed Forces.