; and (BB) does not unduly duplicate or overlap with any other activity or program carried out by any other Federal agency; and (bb) recommendations on how to more effectively manage and carry out 21CSC projects to achieve the purposes of this title in the manner described in item (aa). (III) Additional reports The Comptroller General of the United States may submit to Congress any additional report that includes the content described in subclause (II), as the Comptroller General determines to be necessary. (4) Gifts and donations The head of a participating entity may accept, use, or dispose of a contribution that is a gift or donation of money, services, or property to support the development, implementation, and expansion of a 21CSC project, in accordance with applicable law (including regulations). (5) Cooperative agreements with 21CSC organizations (A) In general The head of each participating entity may— (i) develop a public-private partnership with a 21CSC organization by entering into a cooperative agreement with the 21CSC organization to support and carry out 21CSC projects; and (ii) leverage existing resources described in section 210(b) to support a cooperative agreement. (B) Type of cooperative agreement A cooperative agreement under this paragraph may— (i) be limited to an agreement for a specific 21CSC project; (ii) be a broad agreement covering multiple planned or future 21CSC projects; or (iii) be an agreement for a 21CSC project to be part of a broader 21CSC initiative carried out in partnership with— (I) the Federal Government; (II) a State government