(d) Priority In making grants under this section the Secretary shall give priority to the following: (1) Protecting areas the elevation of which is not greater than 10 feet above mean low tide. (2) Protecting critical infrastructure, as that term is defined in Homeland Security Presidential Directive 7 as issued December 17, 2003. (e) Joint application Two or more contiguous local governments or Tribes may jointly apply for, and receive, a grant under this section. (f) Cost sharing (1) Limitation on Federal share The Federal share of the cost of any activity carried out with a grant under this section shall not exceed 90 percent of the cost of such activity. (2) Non-Federal share The Secretary shall apply to the non-Federal share of an activity carried out with a grant under this section the amount of funds, and the fair market value of property and services, provided by non-Federal sources and used for the activity. (g) Reports Each recipient of a grant under this section shall report annually to the Secretary on progress made on the project carried out with the grant. (h) Authorization of appropriations To carry out this section there is authorized to be appropriated to the Secretary $3,000,000,000 for each of fiscal years 2018 through 2024. .