((a)) ** .—** The Secretary of the Air Force shall allocate funds authorized to be appropriated by a provision described in subsection (c) and a provision described in subsection (d) for maintenance and repair of real property at military installations of the Department of the Air Force without regard to whether the installation is supported with funds authorized by a provision described in subsection (c) or (d).

((b)) ** .—** The Secretary of the Air Force may not combine funds authorized to be appropriated by a provision described in subsection (c) and funds authorized to be appropriated by a provision described in subsection (d) for an individual project for maintenance and repair of real property at a military installation of the Department of the Air Force.

((c)) ** .—** The provision described in this subsection is a provision of a national defense authorization Act that authorizes funds to be appropriated for a fiscal year to the Air Force or the Space Force for research, development, test, and evaluation.

((d)) ** .—** The provision described in this subsection is a provision of a national defense authorization Act that authorizes funds to be appropriated for a fiscal year to the Air Force or the Space Force for operation and maintenance.