text: Appendix A
  is located. The echelon fire support officer usually conducts this liaison in accordance with standard
  command and support relationships.
  A-36. The decision to establish a PAA affects airspace control for rotary-wing, fixed-wing, unmanned, and
  tilt-rotor aircraft integration. A PAA is a base upon which to establish future grid target lines for lateral
  deconfliction and areas for rotary-wing, fixed-wing, unmanned, and tilt-rotor aircraft to avoid, depending on
  high or low angle artillery fires.
  Rally Point
  A-37. A rally point is an easily identifiable point on the ground
  at which units can reassemble and reorganize if they become
  dispersed. Forces conducting a patrol or an infiltration commonly
  use this control measure. Figure A-21 depicts RALLY POINT 14.
  Figure A-21. Rally point 14
  Release Point
  A-38. A release point is a designated place on a route where elements are released from centralized
  control. Once released from centralized control they are released back to the authority of their respective
  commanders. Each start point (SP) must have a corresponding release point (RP), which must also be easy
  to recognize on the ground. Marching units do not stop at the RP; instead, as they move through the RP and
  continue toward their own appropriate destination. Figure A-23 shows RP 3 on ROUTE IRON.
  Relief in Place
  A-39. A relief in place is an operation in which, by direction of
  higher authority, all or part of a unit is replaced in an area by
  the incoming unit and the responsibilities of the replaced
  elements for the mission and the assigned zone of operations are
  transferred to the incoming unit (JP 3-07.3). Figure A-22
  depicts a relief in place. (See Chapter 15 for more information
  on relief in place.)
  Figure A-22. Relief in place
  Route
  A-40. A route is the prescribed course to be traveled from a point of origin to a destination. Routes can
  have different functions. Commanders can add those functions as adjectives to specify different types of
  routes. Examples of such routes include a passing route, main supply route, and alternate supply route.
  Commanders can further designate routes as open, supervised, dispatch, reserved, or prohibited. They can
  assign names, numbers, or alphanumeric designations to routes within their assigned areas. Figure A-23
  depicts ROUTE IRON.