; (2) by redesignating subsections (c) and (d) as subsections (b) and (c), respectively; and (3) in subsection (b) (as so redesignated), by striking the commanding general of the District of Columbia National Guard and inserting the Mayor of the District of Columbia, . (e) Relief from national guard duty Section 325(a)(2)(B) of such title is amended by striking commanding general of the District of Columbia National Guard and inserting the Mayor of the District of Columbia . (f) Authority To order To perform Active Guard and Reserve duty (1) Authority Subsection (a) of section 328 of such title is amended by striking the commanding general and inserting the Mayor of the District of Columbia after consultation with the commanding general . (2) Clerical amendments (A) Section heading The heading of such section is amended to read as follows: 328. Active Guard and Reserve duty: authority of chief executive . (B) Table of sections The table of sections at the beginning of chapter 3 of such title is amended by striking the item relating to section 328 and inserting the following new item: 328. Active Guard and Reserve duty: authority of chief executive. . (g) Personnel matters Section 505 of such title is amended by striking commanding general of the National Guard of the District of Columbia in the first sentence and inserting Mayor of the District of Columbia . (h) National Guard challenge program Section 509 of such title is amended— (1) in subsection (c)(1), by striking the commanding general of the District of Columbia National Guard, under which the Governor or the commanding general and inserting the Mayor of the District of Columbia, under which the Governor or the Mayor ; (2) in subsection (g)(2), by striking the commanding general of the District of Columbia National Guard and inserting the Mayor of the District of Columbia ; (3) in subsection (j), by striking the commanding general of the District of Columbia National Guard and inserting the Mayor of the District of Columbia