Reserve components named

§ 261. Reserve components named (a) The reserve components of the armed forces are: (1) The Army National Guard of the United States. (2) The Army Reserve. (3) The Naval Reserve. (4) The Marine Corps Reserve. (5) The Air National Guard of the United States. (6) The Air Force Reserve. (7) The Coast Guard Reserve. (b) Except as otherwise provided in this title, no person may be a member of more than one reserve component at the same time.