text: Appendix A
  Figure A-1. Ground-based midcourse defense
  A-3. United States Army Space and Missile Defense Command/Army Forces Strategic Command has
  operational responsibility for the GMD system units and exercises administrative control over the GMD-
  system Soldiers. The National Guard Bureau provides Soldiers to staff and operate the missile defense
  element and fire direction center. Subordinate to United States Army Space and Missile Defense
  Command/Army Forces Strategic Command are the 100th Missile Defense Brigade and the 49th Missile
  Defense Battalion. The 100th Missile Defense Brigade staffs the missile defense element and the 49th Missile
  Defense Battalion staffs the fire direction center. The missile defense element provides direction to the fire
  direction center executing global missile defense operations. The fire direction center consists of the GMD
  system fire control system, communications networks, in-flight interceptor communications system, and
  launch support system. Either mode can prosecute the battle independently. In normal operations, the fire
  direction center fights the ballistic missile battle while the missile defense element provides oversight and
  assesses future battle plans. The missile defense element and the fire direction center are manned 24 hours a
  day, 365 days a year.
  C2BMC
  A-4. The C2BMC system is a strategic-level combat information center for the BMDS. It provides planning,
  situational awareness, remote sensor management, and monitoring of ballistic missile defense operations and
  communications for friends, allies, deployed forces, and homeland defense. It links, integrates, and globally
  synchronizes individual ballistic missile defense systems and operations to provide an optimized, layered
  missile defense against threats of all ranges and in all phases of flight.
  A-5. The C2BMC system provides the President and Secretary of Defense a common operating picture and
  enables combatant commanders to systematically plan a missile defense operation, collectively see it
  develop, and dynamically direct networked sensors and weapons systems to defeat the ICBM threat. Figure
  A-2 presents the computers (simple central processing unit and monitors) in the missile defense element 2
  node.