text: ARFOR
  ARMY SUPPORT TO OTHER SERVICES
  B-8. In addition to controlling Army forces, the ARFOR coordinates ASOS. ASOS includes provisions of
  common-user logistics and executive agent support to the JTF as required by the JTF establishing authority.
  ASOS is directed through 10 USC, DOD executive agent, and combatant commander directed authorities.
  The ARFOR headquarters manages support to other Services including, but not limited to—
  * Missile defense.
  * Fire support.
  * Base defense.
  * Transportation.
  * Fuel distribution.
  * General engineering.
  * Intra-theater medical evacuation.
  * Veterinary services.
  * Logistics management.
  * Communications.
  * CBRN defense.
  * Consequence management capability.
  * Explosive ordnance disposal.
  B-9. Sustainment operations are critical to enabling operational reach. The Army’s sustainment capability
  provides crucial theater support that further enables the strategic and operational reach of the joint force.
  Much of this support is provided through ASOS.
  B-10. In all joint operations, sustainment is a Service responsibility except as specified by DOD directives,
  combatant commanders’ lead Service designations, or inter-Service support agreements. Each Service retains
  its responsibility for sustainment. Combatant commanders direct theater army commanders to provide
  common-user logistics and ASOS, agencies, or multinational forces, as required. However, shared
  sustainment responsibility or common-user logistics is more effective, especially for joint operations. Title
  10, USC authorizes combatant commanders to assign common-user logistics responsibilities that overlap the
  military department’s prescribed functions. Additionally, directive authority for logistics is the additional
  authority used by combatant commanders to eliminate duplicated or overlapped sustainment responsibilities.
  The theater army coordinates with the combatant command staff to determine joint sustainment requirements,
  identify responsibilities, and enable commanders to exercise command and control for sustainment. Theater
  army commanders focus on operational-level theater support involving force generation and sustainment
  during campaigns and joint operations.
  B-11. ASOS affords support external to Army forces to increase or improve capabilities. Paragraphs B-12
  through B-26 provide descriptions focused on a few key capabilities provided through ASOS. A few of the
  key examples of ASOS provided at theater and operational levels include general engineering, protection,
  chemical, biological, radiological, and nuclear, air and missile defense, and signal. The ARFOR commander
  advises the JFC on the employment of Army organizations and their capabilities and ensures a clear
  understanding of capability requirements and gaps.
  General Engineering
  B-12. Specialized engineer units are typically employed at theater and operational levels to augment
  capabilities. The general engineering support is fully coordinated with combat operations, while planners
  consider and anticipate the impact of geography, force projection infrastructure, and available assets. General
  engineers perform engineering tasks, including support to construction management, lines of communication,
  infrastructure development, theater opening and closing, and protection.
  B-13. Engineer assets providing support to the theater and field armies focus on those operations that help to
  set the theater. General engineer units such as echelon above brigade engineer construction companies and
  specialized units enable force projection, expeditionary logistics, and the development of the infrastructure
  needed to support the joint force. Military construction in an AO is characterized by using the minimum