I Procurement A Authorization of Appropriations 101. Authorization of appropriations Funds are hereby authorized to be appropriated for fiscal year 2020 for procurement for the Army, the Navy and the Marine Corps, the Air Force, and Defense-wide activities, as specified in the funding table in section 4101. E Defense-wide, Joint, and Multiservice Matters 153. Economic order quantity contracting authority for F–35 Joint Strike Fighter program The Secretary of Defense is authorized to award multiyear contractsfor the procurement of F-35 aircraft in economic order quantities forfiscal year 2021 (Lot 15) through fiscal year 2023 (Lot 17). II Research, Development, Test, and Evaluation A Authorization of Appropriations 201. Authorization of appropriations Funds are hereby authorized to be appropriated for fiscal year 2020 for the use of the Department of Defense for research, development ,test, and evaluation, as specified in the funding table in section 4201. B Program Requirements, Restrictions, and Limitations 212. Temporary inclusion of Joint Artificial Intelligence Center of the Department of Defense in personnel management authority to attract experts in science and engineering (a) In general Subsection (a) of section 1599h of title 10, United States Code, is amended by adding at the end the following new paragraph: (6) Joint artificial intelligence center The Director of the Joint Artificial Intelligence Center may carry out a program of personnel management authority provided in subsection (b) in order to facilitate recruitment of eminent experts in science or engineering for the Center. The authority to carry out the program under this paragraph shall terminate on December 31, 2024. . (b) Scope of appointment authority Subsection (b)(1) of such section is amended— (1) in subparagraph (D), by striking and at the end