#air_unit__airunit  a military unit that is part of the airforce
  supertype:  military_unit__military_force__force  a unit that is part of some military service; "he sent Caesar a force of six thousand men"
  member of:  air_force
  subtype:  division.air_unit  a unit of the United States air force usually comprising two or more wings
  subtype:  wing.air_unit  a unit of military aircraft
  subtype:  air_group__airgroup  a unit of the United States air force larger than a squadron and smaller than a wing
  subtype:  squadron  an air force unit larger than a flight and smaller than a group
     subtype:  escadrille  a air force squadron typically containing six airplanes (as in France during World War I)
  subtype:  flight.air_unit  an air force unit smaller than a squadron

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