; and (II) meets the size limitation of a small antenna established by the Commission; or (iv) the placement and installation of such new facility involves the expansion of the site of an existing communications facility not more than 30 feet in any direction. (6) Eligible support infrastructure The term eligible support infrastructure means infrastructure that supports or houses a facility for communication by wire (or that is designed for or capable of supporting or housing such a facility) at the time when a request to a State or local government or instrumentality thereof, or to an Indian tribal government, for authorization to place, construct, or modify a telecommunications service facility in or on the infrastructure is submitted to the government or instrumentality. (7) Emergency The term emergency means— (A) in the case of an emergency declared by the President, an emergency declared by the President under section 501 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act ( 42 U.S.C. 5191 ); and (B) in the case of an emergency declared by the Governor of a State or the Chief Executive of an Indian tribal government, any occasion or instance with respect to which the Governor or Chief Executive declares that an emergency exists (or makes a similar declaration) under State or Tribal law (as the case may be). (8) Federal authorization The term Federal authorization — (A) means any authorization required under Federal law with respect to a covered project or a covered easement