; (ii) removal of transmission equipment; (iii) replacement of transmission equipment; or (iv) placement, construction, or modification of equipment that— (I) improves the resiliency of the wireless tower, base station, or eligible support structure; and (II) provides a direct benefit to public safety, such as— (aa) providing backup power for the wireless tower, base station, or eligible support structure; (bb) hardening the wireless tower, base station, or eligible support structure; or (cc) providing more reliable connection capability using the wireless tower, base station, or eligible support structure. (B) Eligible support structure The term eligible support structure means a structure that, at the time when an eligible facilities request for a modification of such structure is submitted to a State or local government or instrumentality thereof, supports or could support transmission equipment. (C) Transmission equipment The term transmission equipment has the meaning given such term in section 1.6100(b)(8) of title 47, Code of Federal Regulations (as in effect on the date of the enactment of this paragraph). . (b) Implementation Not later than 180 days after the date of the enactment of this Act, the Federal Communications Commission shall issue final rules to implement the amendments made by subsection (a). (c) Applicability The amendments made by subsection (a) shall apply with respect to any eligible facilities request described in paragraph (1) of section 6409(a) of the Middle Class Tax Relief and Job Creation Act of 2012 ( 47 U.S.C. 1455(a) ) that is submitted (as determined under paragraph (4) of such section, as added by subsection (a)) by a requesting party on or after the date of the enactment of this Act.