Section 5221, added Pub. L. 90–110, title X, § 1001(1), Oct. 21, 1967, 81 Stat. 310, provided for inclusion of naval districts within organization of Department of the Navy. Section 5222, added Pub. L. 90–110, title X, § 1001(1), Oct. 21, 1967, 81 Stat. 310, provided for detailing of officers of the Navy not below the grade of rear admiral as commandants of each of naval districts.