Can an FBI agent be court martialed?

No, FBI agents cannot be court-martialed because they are not members of the military. Court-martial is a military legal proceeding for service members under the Uniform Code of Military Justice (UCMJ). FBI agents are federal law enforcement officers and are subject to Federal Laws and regulations, not military law. Any misconduct by an FBI agent would typically be addressed through administrative actions or federal criminal charges, rather than military courts.