text: Appendix A
  Figure A-3. Joint Tactical Ground Station
  AN/TPY-2 RADAR
  A-8. Missile defense batteries contain the AN/TPY-2 radars operating in the forward-based mode. The
  batteries are deployed world-wide in defense of the United States, host nations, partners and allies, and
  deployed U.S. forces. Each battery consists of a headquarters section, radar platoon, and prime power, sensor
  management, and security operations sections.
  A-9. AN/TPY-2 radars are high precision, long range, three-dimensional X-band, phased-array radars
  having two modes of deployment: forward-based and terminal. (The terminal mode supports THAAD and is
  discussed in paragraph B-8 on page B-5.) In the forward-based mode, the AN/TPY-2 radar primarily supports
  BMDS by detecting ballistic missiles early in their flight and providing precise tracking information. The
  radar provides boost phase identification, discrimination, early warning/surveillance, and tracking of ballistic
  missiles for the theater and global BMDS kill chains. C2 is enabled through the C2BMC system. Figure A-4
  presents an AN/TPY-2 radar and support elements.