; or (B) to a broadcast television station or a broadcast radio station for costs that the station incurred during the reorganization of broadcast television spectrum. (2) Certification Amounts in the Viewer and Listener Protection Fund shall be available to the Commission immediately upon certification by the Commission to the Secretary that the amounts are necessary to provide a reimbursement to a broadcast television station or to a broadcast radio station, as applicable, for a purpose described in paragraph (1). (d) Limitation Amounts made available to the Commission under subsection (c) shall be available until the end of fiscal year 2022. (e) Unused funds returned to the general fund of the Treasury If any amounts remain in the Viewer and Listener Protection Fund after the end of fiscal year 2022, the Secretary shall transfer such amounts to the general fund of the Treasury. 4. Transition period for broadcast television stations (a) In general The Commission shall— (1) subject to subsection (b), modify the transition period for the relocation of specific broadcast television stations in accordance with the reassignments of television channels made under section 6403(b) of the Middle Class Tax Relief and Job Creation Act of 2012 ( 47 U.S.C. 1452(b) ) to ensure that— (A) no broadcast television station is forced to stop broadcasting or significantly reduce service for a significant period of time due to reasons outside of the control of the station; and (B) the relocation of broadcast television stations proceeds as efficiently and effectively as possible