of this Act, the head of each Federal agency that administers a program through which Federal funds are made available shall update the regulations for the program to comply with subsection (a). 4. Secure and Trusted Communications Networks Reimbursement Program (a) In general The Commission shall establish a reimbursement program, to be known as the Secure and Trusted Communications Networks Reimbursement Program , to make reimbursements to providers of advanced communications service to replace covered communications equipment or services. (b) Eligibility The Commission may not make a reimbursement under the Program to a provider of advanced communications service unless the provider— (1) has 2,000,000 or fewer customers