; 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. . 604. Dual basic allowance for housing for training for certain members of reserve components Section 403(g)(3) of title 37, United States Code, is amended— (1) by striking Paragraphs and inserting (A) Except as provided by subparagraph (B), paragraphs