text: Glossary
  theater closing
  The process of redeploying Army forces and equipment from a theater, the drawdown and removal or
  disposition of Army non-unit equipment and materiel, and the transition of materiel and facilities back
  to host nation or civil authorities. (ADP 4-0)
  theater distribution
  The flow of personnel, equipment, and materiel within theater to meet the geographic combatant
  commander’s missions. (JP 4-09)
  theater opening
  The ability to establish and operate ports of debarkation (air, sea, and rail), to establish a distribution
  system and sustainment bases, and to facilitate throughput for reception, staging, and onward
  movement of forces within a theater of operations. (ADP 4-0)
  theater strategic level of warfare
  The level of warfare at which combatant commanders synchronize with unified action partners and
  employ all elements of national power to fulfill policy aims within the assigned theater in support of
  the national strategy. (FM 3-0)
  threat
  Any combination of actors, entities, or forces that have the capability and intent to harm United States
  forces, United States national interests, or the homeland. (ADP 3-0)
  troop movement
  The movement of Soldiers and units from one place to another by any available means. (FM 3-90)
  unified action
  The synchronization, coordination, or integration of the activities of governmental and
  nongovernmental entities with military operations to achieve unity of effort. (JP 1, Volume 2)
  unified action partner
  Those military forces, governmental and nongovernmental organizations, and elements of the private
  sector with whom Army forces plan, coordinate, synchronize, and integrate during the conduct of
  operations. (ADP 3-0)