; (B) joint duty assignments under chapter 38 of title 10, United States Code; and (C) the combatant commands. (2) Any proposal of the Secretary to increase the maximum number (under section 526a of such title) of such general officers in order to meet such requirements in the future. (3) A justification for any such proposal. B Reserve Component Management 511. Removal of active duty prohibition for members of the Air Force Reserve Policy Committee Section 10305 of title 10, United States Code, is amended— (1) in subsection (b), by striking not on active duty both places it appears; and (2) in subsection (c)— (A) by inserting of the reserve components after among the members ; and (B) by striking not on active duty . 512. Grade of Vice Chief of the National Guard Bureau Section 10505 of title 10, United States Code, is amended by adding at the end the following new subsection: (c) Grade (1) The Vice Chief of the National Guard Bureau shall be appointed to serve in the grade of general. (2) The Secretary of Defense shall designate, pursuant to subsection (b) of section 526 of this title, the position of Vice Chief of the National Guard Bureau as one of the general officer and flag officer positions to be excluded from the limitations in subsection (a) of such section. . 513. Mobilization of Selected Reserve for preplanned missions in support of the combatant commands Section 12304b(b)(1) of title 10, United States Code, is amended— (1) by redesignating subparagraphs (A) and (B) as clauses (i) and (ii), respectively; (2) by striking Units and inserting (A) Except as provided under subparagraph (B), units