; or (2) to redesign technologies to reduce the use of strategic and critical materials in such technologies. (g) Definitions In this section: (1) Covered programs The term covered programs means all major defense acquisition programs (as that term is defined in section 2430 of title 10, United States Code) for the development or procurement of aircraft or missiles. (2) Original equipment manufacturer The term original equipment manufacturer means a contractor or subcontractor in the supply chain that integrates strategic and critical materials into a component used in a product that is sold to the Federal Government. (3) Strategic and critical materials The term strategic and critical materials means— (A) the lanthanide elements, yttrium, and scandium; (B) titanium and titanium alloys; (C) magnesium; (D) antimony; (E) tungsten; (F) uranium; (G) tantalum; (H) fluorspar; (I) lithium; (J) strontium; (K) vanadium; (L) steel— (i) with a maximum alloy content exceeding one or more of the following limits: (I) manganese, 1.65 percent; (II) silicon, 0.60 percent; or (III) copper, 0.60 percent; or (ii) containing more than 0.25 percent of any of the following elements: aluminum, chromium, cobalt, columbium, molybdenum, nickel, titanium, tungsten, or vanadium; (M) zirconium and zirconium base alloys; (N) metal alloys consisting of nickel, iron-nickel, and cobalt base alloys containing a total of other alloying metals (except iron) in excess of 10 percent; (O) thorium; and (P) any other materials determined to be materials critical to national security by the Strategic Materials Protection Board established under section 187 of title 10, United States Code. (h) Sunset The Fund shall terminate on September 30, 2023, and any amounts remaining in the Fund on such date shall be deposited in the Treasury of the United States. 4. Nuclear reactors assessment (a) Finding Congress finds that section 1012 of the National Defense Authorization Act for 2008 ( Public Law 110–181