docs: def decide_k(airport_code):
      """A function to decide if a leading 'K' is throwing off an airport match and return the correct code."""
  
      if airport_code[:1].upper() == 'K':
          try: # if there's a match without the K that's likely what it is.
              return Airport.objects.get(location_identifier__iexact=airport_code[1:]).location_identifier
          except Airport.DoesNotExist:
              return airport_code
      else:
          return airport_code