You just might want to consider extending your stay in the Edmonton area for the following...
June 18 - 19: Cold Lake Air Show
June 24 - 26: Alberta Aviation Museum's AirFest (part of convention plan!)
Air Force Museum of Alberta (Calgary)
Bomber Command Museum (Nanton)
Inspiration for "Bush Attire" for the NorthWest Staging Route Dinner:
Captains of the Clouds Northern Exposure Amelia Earhart
Hopefully it'll be too warm for this!