The Secretary of Transportation shall, under the authority of the Emergency Rail Services Act of 1970 [45 U.S.C. 661 et seq.], immediately guarantee trustee certificates of the Milwaukee Railroad, on the basis of an estimate of the amount required to be provided under subsection (e) of this section, for purposes of allowing the Milwaukee Railroad, commencing November 1, 1979, to maintain its entire railroad system in accordance with section 920 of this title, and as required to finance operations which the Milwaukee Railroad continues for the 60-day period beginning on the date of the occurrence of an event described in section 920(b) of this title or on April 1, 1980, whichever first occurs. Such guarantee shall be made without regard to the findings set forth in section 3(a) of the Emergency Rail Services Act of 1970 [45 U.S.C. 662(a)], and the provisions of section 3(b)(3) [45 U.S.C. 662(b)(3)] and the last two sentences of section 3(d) of such Act [45 U.S.C. 662(d)] shall not apply to such guarantee.