text: Air Movement Plan
  Figure 12-1. Air route overlay
  EN ROUTE FORMATIONS
  12-10. Many factors dictate the flight’s formation, such as terrain, enemy situation, visibility, weather,
  altitude, speed, type of aircraft mix, and the degree of control required. The air mission commander or
  flight leader selects the en route formation and landing formation based on the mission analysis of the
  ground tacticalplan.Ideally,allaircraftslandatthesametime inaplannedflightformationasspecified by
  theair movement table.Thelandingsitecommanderincludesthisinformationinhis landinginstructionsto
  the flight leader and the pathfinder establishing the landing zone. (Refer to FM 3-04.113 for more
  information.)
  12-11. The flight leader and pathfinder must understand the en route and landing formation and the
  groundtactical plantobest support thegroundunitandfacilitate theair assaultoperation. Theflightleader
  should try to match the landing formation to the flight formation. Pilots should have to modify their
  formations no more than necessary to accommodate the restrictions of a landing site, but it might be
  necessarytolandinarestrictivearea.Touchdownpointsareestablishedbythepathfinderinthesameorder