; and (C) the Under Secretary shall advise the Commission on the executive branch position following the adjudication and decision under the process described in this paragraph. (4) Post-Commission action procedures If the Commission takes a spectrum action to make spectrum available for non-Federal use and an affected Federal entity has knowledge, unforeseen before the Commission took the spectrum action, that the non-Federal use is causing or potentially will cause harmful interference to existing Federal operations or non-Federal operations that are regulated by the Federal entity— (A) not later than 45 days after the date on which the affected Federal entity learns of the unforeseen risk of harmful interference, the Federal entity may formally request that the Under Secretary address the issue with the Commission for an appropriate remedy, which request shall— (i) clearly indicate the manner in which the public interest will be implicated or harmed or in which the mission of the Federal entity will be adversely affected; (ii) present evidence to the Under Secretary that the non-Federal use is causing or potentially will cause harmful interference or potential harm to the public interest, including any technical or scientific data that supports that position; and (iii) explain why the Federal entity cannot take steps to ensure mission continuity that are consistent with the spectrum action of the Commission; (B) if the Under Secretary believes that the affected Federal entity has produced sufficient evidence under subparagraph (A) that the non-Federal use will risk harmful interference that cannot be reasonably mitigated without Commission action, the Under Secretary, not later than 60 days after receiving the request from the Federal entity, shall address the Commission under established processes under the Memorandum and, as applicable, the Practice and Procedure of the Commission under part 1 of title 47, Code of Federal Regulations, or any successor regulations, for seeking appropriate relief