; (c) Unescorted access to military installations in United States for certain individuals The Secretary shall maintain guidance regarding the granting of unescorted access to military installations in the United States for covered individuals and ensure such guidance is circulated to the commanders of each such military installation. Such guidance shall— (1) identify the categories of covered individuals that may obtain such unescorted access; (2) include a list of credentials that can be used for access to an installation that are, to the extent practical, types of identification non-Department of Defense personnel already possess; (3) be consistent across military installations in the United States; and (4) be in accordance with any privileges or benefits accorded under, procedures developed pursuant to, or requirements of, each covered provision and subsection (a). (d) Physical entrances to certain military installations The Secretary shall ensure that, to the extent practicable— (1) each military installation in the United States has a designated main entrance that, at all times, is manned by at least one member of the Armed Forces or civilian employee of the Department; (2) the location of each such designated main entrance is published on a publicly accessible Internet website of the Department; (3) if a military installation in the United States has any additional entrance designated for commercial deliveries to the military installation, the location of such entrance (and any applicable days or hours of operation for such entrance) is published on the same Internet website specified in paragraph (2)