text: FM 4-0
  SUSTAINMENT
  OPERATIONS
  AUGUST 2024
  DISTRIBUTION RESTRICTION:
  Approved for public release; distribution is unlimited.
  This publication supersedes FM 4-0, dated 31 July 2019;
  FM 4-01, dated 3 April 2014; FM 4-30, dated 1 April 2014; and
  FM 4-40, dated 22 October 2013.