That scenario requires better radar coverage of our coast, more presence on the water (RCMP, CCG, RCN, Volunteer coast watchers ) and a somewhat competent CBSA (In my dealings with them, I have been less than impressed). Having a CDC stationed at Prince Rupert and combining training and patrolling along our coast would be a good addition to our marine awareness, as would a KSS-III patrolling and training. Keeping in mind we also have 200 mile economic zone to protect as well. That would mostly be surveilled by aircraft and satellites, but you need ships to investigate contacts and make our presence felt.