The measures that can be taken to protect this particular facility would include not only the placement of anti-aircraft missiles, but also the rerouting of flight paths, which I imagine would have to be of course cleared through Transport Canada.
Pour protéger ce genre d'installations, on pourrait envisager non seulement d'y installer des missiles antiaériens mais de changer certaines trajectoires de vol, qui devraient, je suppose, être autorisées par les responsables de Transports Canada.