In Montreal, Canadair builds a very popular line of small to medium-sized jetliners. They've just put out a medium-sized one that is going to be a world-beater. They finally got one to beat the Brazilians. Across the country, and you can go all the way across, there is R&O, repair and overhaul opportunities, for civil and military aircraft.
I'm not particularly worried about the sector now, except for the skilled-worker part of it.