; and (B) by striking or the commanding general of the District of Columbia National Guard, both places it appears. (12) Courts-martial of National Guard not in Federal service: composition, jurisdiction, and procedures; convening authority In sections 326 and 327, by striking the District of Columbia, each place it appears. (13) Active Guard and Reserve duty: Governor's authority In section 328, by striking or the commanding general of the District of Columbia National Guard, each place it appears. (14) Training generally In section 501(b), by striking the District of Columbia, . (15) Participation in field exercises In section 503(b), by striking the District of Columbia, . (16) National Guard schools and small arms competitions In section 504(b), by striking Puerto Rico, or the District of Columbia and inserting or Puerto Rico, . (17) Army and Air Force schools and field exercises In section 505, in the matter preceding paragraph (1), by striking and the Virgin Islands or of the commanding general of the National Guard of the District of Columbia and inserting or the Virgin Islands . (18) National Guard Youth Challenge Program In section 509— (A) in subsection (c)(1)— (i) by striking or, in the case of the District of Columbia, with the commanding general of the District of Columbia National Guard, ; and (ii) by striking or the commanding general ; (B) in subsection (g)(2), by striking and the commanding general of the District of Columbia National Guard (if the District of Columbia National Guard is participating in the Program) ; (C) in subsection (j)— (i) by striking or, in the case of the District of Columbia, the commanding general of the District of Columbia National Guard ; and (ii) by striking or the commanding general both places it appears; (D) in subsection (k), by striking and, if the Program is carried out in the District of Columbia, with the commanding general of the District of Columbia National Guard