; and (B) towers excepted under subsection (d)(1)(B)(viii) must be contained in the database; (2) keep the database current, and that towers to be included in the database are entered before their construction; (3) ensure that any proprietary information in the database is protected from disclosure in accordance with law; (4) ensure that, by virtue of accessing the database, users agree and acknowledge that information in the database— (A) may only be used for aviation safety purposes; and (B) may not be disclosed for purposes other than aviation safety, regardless of whether or not the information is marked or labeled as proprietary or with a similar designation; and (5) ensure that pilots who intend to conduct low-altitude operations in locations described in sentence (d)(1)(A)(vi) consult the relevant parts of the database before conducting such operations. (f) Exclusion and waiver authorities As part of a rulemaking conducted pursuant to this section, the Administrator— (1) may exclude a class, category, or type of tower determined by the Administrator, after public notice and comment, to not pose a hazard to aviation safety; (2) shall establish a process to waive individual or specific covered towers from the marking requirements under this section as required under the rulemaking if the Administrator later determines such towers does not pose a hazard to aviation safety