Canada has long avoided joining the US ballistic missile defence programme, under the assumption that the US would shoot down a nuclear missile heading for its northern neighbour anyway.
Yeah. They want to freeload on US defense spending.
The story of the little red hen comes to mind...
The fact that Canada is not part of the missile defense system may mean that there are not any anti-missiles in position to defend Canadian territory. Vancouver and Windsor would probably be OK because of their proximity to Seattle and Detroit.