Canada's largest port expansion isn't just about bigger ships or more containers. Roberts Bank sits at the centre of a transportation network that quietly moves billions of dollars in goods across North America every year.

Canada's largest proposed port expansion has reached a major milestone with the selection of a preferred construction partner. Canada's largest proposed port expansion has reached a major milestone

Delta's port facilities handle billions of dollars in international trade every year. This final installment of the Inside Delta series explores how Canada's border agencies balance security with the efficient movement of legitimate commerce through one of the nation's busiest trade gateways.

How did border officers identify one suspicious shipping container among thousands arriving in Delta every day? This behind-the-scenes look reveals the intelligence, technology and teamwork that led to one of Canada's largest recent opium seizures.