Sec.  101.301   National defense; free service.

   Any common carrier authorized under the rules of this part may render to any
   agency of the United States Government free service in connection with the
   preparation for the national defense. Every such carrier rendering any such
   free service must make and file, in duplicate, with the Commission, on or
   before the 31st of July and on or before the 31st day of January in each
   year, reports covering the periods of 6 months ending on the 30th of June
   and the 31st of December, respectively, next prior to said dates. These
   reports  must show the names of the agencies to which free service was
   rendered pursuant to this rule, the general character of the communications
   handled for each agency, and the charges in dollars which would have accrued
   to the carrier for such service rendered to each agency if charges for such
   communications had been collected at the published tariff rates.