; and (2) involves— (A) the incremental development and fielding of capabilities, commonly called “spirals”, “spins”, or “sprints”, which can be measured in a few weeks or months; and (B) continuous participation and collaboration by users, testers, and requirements authorities. 844. Credits to Department of Defense Acquisition Workforce Development Fund Section 1705(d)(2)(D) of title 10, United States Code, is amended to read as follows: (D) The Secretary of Defense may adjust the amount specified in subparagraph (C) for a fiscal year if the Secretary determines that the amount is greater or less than reasonably needed for purposes of the Fund for such fiscal year. The Secretary may not adjust the amount for a fiscal year to an amount that is more than $600,000,000 or less than $400,000,000. . E Provisions related to commercial items 851. Modification to definition of commercial items Section 2376 of title 10, United States Code, is amended— (1) in paragraph (1), by striking commercial item , ; and (2) by adding at the end the following new paragraph: (4) The term commercial item has the meaning given the term in section 103 of title 41, except that it does not include an item referred to in paragraph (3)(B) of such section if, after the minor modifications made to meet Federal Government requirements referred to in such paragraph, the item includes a preponderance of government-unique functions or essential characteristics. . 852. Revision to definition of commercial item Section 103(8) of title 41, United States Code, is amended by striking to multiple State and local governments and inserting to multiple State, local, or foreign governments . 853. Commercial item determinations Section 2380 of title 10, United States Code, is amended— (1) by striking The Secretary and inserting (a) In general .—The Secretary