text: Using the Operational Framework
  STRATEGIC SUPPORT AREA
  C-8. The strategic support area describes the area extending from a theater of operations to a base in the
  United States or another combatant commander's AOR. It contains those organizations, lines of
  communications, and other agencies required to support forces in the field. It also includes the airports and
  seaports supporting the flow of forces and sustainment into a theater. Finally, a strategic support area may
  also contain key operational capabilities, such as cyber assets, that may be employed inside of an operational
  area from outside of it. Most friendly nuclear, space, and cyberspace capabilities, and important network
  infrastructure, are controlled and located in the strategic support area. Army strategic support areas will often
  transition through or reside in other combatant command close and deep areas.
  JOINT SECURITY AREA
  C-9. A JSA is an area inside, or immediately adjacent to, an operational area where forces and sustainment
  are postured to support operations. The JSA is where friendly forces posture combat power, sustain
  operations, and project power into an AO.
  C-10. A joint security area is a specific surface area, comprised of mainly of land areas but it may have
  limited sea areas as well, designated by the JFC to facilitate protection of joint bases and their connecting
  lines of communication that support joint operations in an operational area. A significant amount of joint
  forces position themselves in the JSA to conduct operations.
  ASSIGNED AREA OF OPERATIONS
  C-11. Inside of an assigned AO, Army forces will generally have a rear-close-deep orientation. These areas
  will overlap with operational and strategic areas on their edges. Paragraphs C-15 through C-40 describe this
  framework in greater detail.
  EXTENDED DEEP AREAS ON THE MULTI-DOMAIN BATTLEFIELD
  C-12. Operational deep areas are generally those areas immediately beyond the land component's initially
  assigned AO. These areas may or may not be in the boundaries of a JOA or a theater of operations.
  Operational deep areas are often beyond the feasible movement of conventional forces without significant
  support from the joint force.
  C-13. Operational deep areas are often highly contested and contain enemy supporting formations and
  capabilities for their main forces. Enemy forces can generate significant combat power from these areas, and
  capabilities that reside here are often vital to their conduct of operations. In most campaign designs,
  operational objectives for friendly forces reside initially in the operational deep area.
  C-14. Strategic deep areas are the areas beyond the feasible range of movement for conventional forces, but
  they are where joint fires, special operations forces, information, and virtual capabilities can be employed.
  These areas are either beyond the operational reach of conventional forces, or they are prohibited by policy
  to employ capabilities there. Many enemy space, cyberspace, and information physical capabilities reside in
  strategic deep areas across international boundaries and outside the JOA, and they often comprise multiple
  geographically noncontiguous areas.
  DEEP, CLOSE, REAR, AND SUPPORT AREAS
  C-15. In their assigned AOs, Army commanders designate deep, close, rear, and support areas, to describe
  the physical arrangement of forces in time, space, and purpose. The areas are dynamic and require continuous
  adjustment as the situation changes throughout an operation. Each of the echelons reflects these adjustments
  in perspective by modifying existing graphic control measures and creating new ones. Careful management
  of graphic control measures to reflect a common understanding of the operational framework and simplify
  command and control facilitates subordinate echelons’ freedom of action necessary to create and exploit
  opportunities. The locations of the deep, close, and rear areas shift in relation to each when unit boundaries
  change at the direction of a higher headquarters.