Prohibition— Notwithstanding subsections (c) and (d) of section 2482 of title 10, United States Code, or any other provision of law, the Secretary of Defense may not—
Exception— Subsection (a) does not apply to a change in the size or location of a commissary store or exchange store if the Secretary of Defense determines that the change is required for upgrading or modifying an existing structure for safety or health reasons.