- Draw airport ground vehicles and ground stations as what they are instead of
  the generic plane. An airport vehicle (type `ZVEH`) is a fire truck, pushback
  tug, van or car by its callsign, a ground station (`GRND`) is a new 11.8 m
  radio mast, and one with no altitude stands on the ground instead of at the
  10 km airborne default (samehkhamis, #1729).