We conducted this investigation in response to a complaint alleging that (the Subject), U.S. Air Force Reserve, Flight Chief, Grissom Air Reserve Base, Indiana, restricted (the Complainant) from lawfully communicating with an Inspector General (IG). A preponderance of the evidence indicates that the Subject restricted the Complainant from communicating with an IG. Therefore, we substantiated the allegation that the Subject restricted the Complainant from lawfully communicating with an IG.