Notwithstanding any other provision of law, the Secretary of Housing and Urban Development is authorized to convey by quit claim deed, without consideration, to any State for National Guard purposes any land, together with any nondwelling structures thereon, held under subchapters II to VII of this chapter or any other Act in connection with war or veterans’ housing: Provided, That the United States shall be saved harmless from or reimbursed for such costs incidental to the conveyance as the Secretary of Housing and Urban Development may deem proper: Provided further, That the conveyance of such land shall contain the express condition that if the grantee shall fail or cease to use such land for such purposes, or shall alienate (or attempt to alienate) such land, title thereto shall, at the option of the United States, revert to the United States.