From the Document: "Title 10, United States Code (U.S.C.) §2464 states that it is 'essential for the national defense that the Department of Defense maintain a core logistics capability that is government-owned and government-operated [GOGO]... to ensure a ready and controlled source of technical competence and resources necessary to ensure effective and timely response to a mobilization, national defense contingency situations, and other emergency requirements.' Accordingly, each military service owns and operates industrial facilities that manufacture, maintain, repair, and overhaul military weapons and equipment. These GOGO facilities, together with certain government-owned, contractor-operated (GOCO) facilities are collectively referred to as the organic industrial base, or OIB. Included in the OIB are several large-scale maintenance facilities (otherwise named depots, shipyards, production plants, logistics complexes, or readiness centers) owned by each service that are dedicated to performing depot-level maintenance and repair (collectively the 'maintenance depots'). In addition, the Air Force and Navy utilize several 'centers' that perform weapon systems support in the forms of research, development, test and evaluation (RDT&E), acquisition, and sustainment activities including depot-level maintenance and repair. This InFocus pertains to those selected large-scale maintenance facilities that maintain, repair, or overhaul end items (See GAO-17-82R)."
CRS In Focus, IF11466
Congressional Research Service: https://crsreports.congress.gov/