; and (2) by striking December 31, 2020 and inserting December 31, 2023 . 307. Multiyear appropriations for marketing and advertising (a) In general Chapter 141 of title 10, United States Code, is amended by inserting after section 2410s the following new section: 2410t. Contracts for periods crossing fiscal years: Marketing and advertising contracts (a) Authority The Secretary of Defense, the Secretary of a military department (as defined in section 102 of title 5), or the Secretary of Homeland Security with respect to the Coast Guard when it is not operating as a service in the Navy, may enter into a contract, for a period that begins in one fiscal year and ends in the next fiscal year (without regard to any option to extend the period of the contract), to procure marketing and advertising services. (b) Obligation of funds Funds made available in one fiscal year may be obligated or expended in the next fiscal year for a contract entered into under subsection (a). . (b) Clerical amendment The table of sections at the beginning of chapter 141 of such title is amended by inserting after the item relating to section 2410s the following new item: 2410t. Contracts for periods crossing fiscal years: Marketing and advertising contracts. . B Advancement of national service 321. National service fellowships (a) In general Section 198B of the National and Community Service Act of 1990 ( 42 U.S.C. 12653b ) is amended to read as follows: 198B. National service fellowships (a) Definitions In this section: (1) Area of national need The term area of national need means targeted efforts to— (A) improve education in schools for economically disadvantaged students; (B) expand and improve access to health care; (C) improve energy efficiency and conserve natural resources; (D) improve economic opportunities for economically disadvantaged individuals; (E) improve disaster preparedness and response