; and (2) by adding at the end the following new subparagraph: (D) (i) Under regulations prescribed by the Secretary concerned, the Secretary may authorize the payment of a basic allowance for housing to a member of a uniformed service without dependents who is serving in a pay grade below E–6 and has orders to a naval vessel during a shipyard availability or maintenance period. (ii) In prescribing regulations under clause (i), the Secretary concerned shall consider the availability of quarters for members serving in pay grades below E–6 before authorizing the payment of a basic allowance for housing for such members. . 624. Dual basic allowance for housing for training Section 403 of title 37, United States Code, as amended by sections 622 and 623, is further amended, in subsection (g)(3), by striking Paragraphs and inserting Except in the case of a member of a reserve component without dependents who is called or ordered to active duty to attend training for at least 140 days but fewer than 365 days, paragraphs . 625. Cost-of-living allowance in the continental United States: high cost areas Section 403b(c) of title 37, United States Code, is amended— (1) in the second sentence, by striking 8 percent and inserting 5 percent ; and (2) in the third sentence, by striking shall prescribe and inserting may prescribe . 626. Family separation allowance: increase; review (a) Increase Section 427(a) of title 37, United States Code, is amended, in paragraph (1), by striking equal to $250 and inserting of not less than $250, and not more than $400, . (b) Review In each quadrennial review of military compensation conducted after the date of the enactment of this Act and under section 1008(b) of such title, the President shall include— (1) a review of the family separation allowance under section 427 of such title (or successor allowance)