; (3) by redesignating subsection (b) as subsection (a); (4) by striking subsection (c) and inserting the following: (c) Waivers (1) In general Notwithstanding any other provision of law, when the President, the Secretary of Defense, or the Secretary of Transportation declares the existence of an emergency justifying a temporary waiver of this section or section 55314, the President, the Secretary of Defense, or the Secretary of Transportation, following a determination by the Maritime Administrator, acting in the Administrator’s capacity as Director, National Shipping Authority, of the non-availability of qualified United States flag capacity at fair and reasonable rates for commercial vessels of the United States to meet the requirements of this section or section 55314, may waive compliance with such section to the extent, in the manner, and on the terms the Maritime Administrator, acting in such capacity, prescribes, and no other waivers of the requirements of this section or section 55314 shall be authorized. (2) Duration of waiver (A) In general Subject to subparagraphs (B) and (C), a waiver issued under this subsection shall be for a period of not more than 60 days. (B) Waiver extension Upon termination of the period of a waiver issued under this subsection, the Maritime Administrator may extend the waiver for an additional period of not more than 30 days, if the Maritime Administrator makes the determinations described in paragraph (1). (C) Aggregate duration The aggregate duration of the period of all waivers and extensions of waivers under this subsection with respect to any one set of events shall not exceed 3 months in a fiscal year. (3) Determinations The Maritime Administrator shall— (A) for each determination referred to in paragraph (1), identify any actions that could be taken to enable qualified United States flag capacity to meet the requirements of this section or section 55314 at fair and reasonable rates for commercial vessels of the United States