(a) In general In the case of a taxpayer determined by the Secretary to be affected by a federally declared disaster (as defined by section 165(i)(5)(A)), a significant fire, or a terroristic or military action (as defined in section 692(c)(2)), the Secretary may specify a period of up to 1 year that may be disregarded in determining, under the internal revenue laws, in respect of any tax liability of such taxpayer- (1) whether any of the acts described in paragraph (1) of section 7508(a) were performed