((a)) ** .—** The Secretary of a military department may provide services described in subsection (c) in connection with an annual conference or convention of a national military association.

((b)) ** .—** Services may be provided under this section only if—

((1)) the provision of the services in any case is approved in advance by the Secretary concerned;

((2)) the services can be provided in conjunction with training in appropriate military skills; and

((3)) the services can be provided within existing funds otherwise available to the Secretary concerned.

((c)) ** .—** Services that may be provided under this section are—

((1)) limited air and ground transportation;

((2)) communications;

((3)) medical assistance;

((4)) administrative support; and

((5)) security support.

((d)) ** .—** The Secretary of Defense shall designate those organizations which are national military associations for purposes of this section.

((e)) ** .—** The Secretary of Defense shall prescribe regulations to carry out this section.