I believe its Terrorism since Canada is a NATO aligned nation, threats of terrorism do come occasionally, like not so long ago where the 3 men from Ottawa and London plotted and/or conspired in an attack against government infrastructures. Funny how he was on Canadian idol too. Other than terrorism, occasional violations of Russian patrol aircraft in the Arctic and extreme weather that necessitated deployment of the forces i think it was "operation Recuperation"? Not really a threat but not conducive to the well being of Canadians alike.
When? Anytime. How? anyway. Where? anywhere. Murphy's law tells us to assume the worst. Living in this age after the cold war brings us memories of the past with rising economic/super/militarized powers and already existing nuclear stockpiles the world can easily be mobilized into war with a click of a button. Even though it may seem peaceful, all it takes is one wrong move to cause a chain reaction.
When NORAD, CSIS, DND has sufficient intelligence on this matter. appropriate measures will be taken by the DND, Federal government and appropriate authorities to protect the lives and well being of Canadians and Canadian assets.
A sizable force such as the current size of the Canadian forces is sufficient to satisfy Canada's security needs. Even though its comparatively small to our neighbors its only logical since their population is 10x higher and our military power does not complement political motivation such as with the states. I must admit its a pain in the butt to wait in such a long line but I understand that Canada's military does have its mission, budget and expenditures controlled to meet the Federal budget and diplomacy or whatnot.
With all due respect to all related to the forums and of this general matter. The military operates within its confines of its government despite protests by a lot of people like people waiting in line at the CFRCs. After rereading what I wrote, I sound like a smart-*** but I must acknowledge the fact that the Forces is doing a satisfactory job in its duties and that its size and budget is a matter of the federal government not within the jurisdiction of the forces. Even though it is a tedious wait, I will continue to wait for my intention is to serve such an amazing organization.