I think the threats that come by sea are certainly terrorist in nature. You see that mainly in other countries. There have been several cases of terrorist attacks in ports and in essential passages, for examine, in areas like the Strait of Malacca. These are very narrow canals that ships have to pass through.
There is always a risk of a terrorist attack in Canada, and that could take various shapes, including by sea. That being said, most terrorist activities that take place in maritime areas are connected with criminal groups and terrorist financing.