text: area for Airport is much more inclusive than appears legitimate (e.g. commercial area long Barlow & 25 St, Challenger Park in SE corner, golf course, etc); neither does it seem reasonable in terms of OSM wiki for aerodrome
  Does anyone have knowledge of what the boundary should actually be? Is the boundary, as shown, some sort of "reserve"?
  And why are McCall & Deerfot Aviation Park names parenthetically elaborated?