(1) shall be submitted in unclassified form, but may include a classified annex. (e) Foundational artificial intelligence model defined In this section, the term foundational artificial intelligence model means an adaptive generative model that is trained on a broad set of unlabeled data sets that may be used for different tasks with minimal fine-tuning. F Reports and Other Matters 1551. Limitation on availability of funds for travel for Office of Under Secretary of Defense for Personnel and Readiness pending strategy relating to Defense Travel System (a) Strategy The Under Secretary of Defense for Personnel and Readiness shall develop a strategy to modernize or replace the end-to-end travel management system of the Department of Defense known as the Defense Travel System (in this section, referred to as the Defense Travel System ). (b) Elements The strategy under subsection (a) shall include the following: (1) A business case analysis that evaluates options for modernizing or replacing the Defense Travel System, including— (A) an assessment of the upgradability of the code base for the Defense Travel System before such code base reaches a point of unsustainability