; (ii) support for the facilitation of the challenge process, the framework for which is established by the Commission under section 3(a)(2); and (iii) independent data validation services, including in-field verification of the availability of broadband internet access service reported by providers, to the Commission to ensure the accuracy and continual refinement of the National Broadband Map; (B) execute data-sharing agreements, as may be requested, with providers to facilitate the exchange of information needed to create shapefiles, or any other such depiction as the Commission may prescribe, of the availability of broadband internet access service for the purposes of carrying out subsection (d); (C) analyze the information exchanged under subparagraph (B) to produce depictions of the availability of fixed broadband internet access service and mobile broadband internet access service in compliance with the requirements established under section 3(a)(1), for any providers that are eligible for the assistance described in subparagraph (A)(i); (D) provide the depictions of service availability under subparagraph (C) to the Commission for— (i) the internal use of the Commission; and (ii) incorporation in the National Broadband Map; (E) support collaboration between the Commission and other Federal agencies to— (i) track, map, and validate how funds made available through Federal grants, loans, or other financial awards or incentives for the development of broadband infrastructure have been expended to improve the availability of broadband internet access service; and (ii) ensure transparency and accountability with respect to the expenditures described in clause (i), taking into account existing accountability measures, such as requiring the deployment of broadband infrastructure to be reported on a geocoded or other location-specific basis