As a potential airport user, I'm not too pumped up about the airport investment stuff as I would anticipate greater expense and worse service, but what I would guess is the reasoning there is that Carney is looking for a relatively stable domestic location that is big enough for the Canadian pension funds to store a bunch of dough - and there will be some dealings with unsavoury sorts to make that a reality.
My mental processing power is all potato based, so I probably don't really understand what is happening.