; (B) providing technical training and user support; and (C) providing outreach and programming for groups historically underrepresented in STEM. (4) AI testbeds, including by— (A) in coordination with the National Institute of Standards and Technology, facilitating access to artificial intelligence testbeds through which researchers can measure, benchmark, test, or evaluate engineering or algorithmic developments; and (B) developing a comprehensive catalog of open AI testbeds. 5604. NAIRR processes and procedures (a) User eligibility (1) Eligible users Subject to paragraph (3), the following users shall be eligible for access to the NAIRR: (A) A researcher, educator, or student based in the United States that is affiliated with an entity described in paragraph (2). (B) An employee of an entity described in clause (iii) or (iv) of paragraph (2)(B) with a demonstrable mission-need. (2) Entities described An entity described in this paragraph is an entity that— (A) is based in the United States