200,000+ aircraft movements and 4,800 km of border are monitored in North Bay to protect airspace sovereignty. 

A photo of a CF-18 at the YYB North Bay Jack Garland Airport

All aircraft penetrating this radar coverage are detected and identified by the personnel of 21 Aerospace Control and Warning Squadron (AC&W Sqn), who are on guard 24 hours per day, 7 days per week. Unidentified aircraft, aircraft in distress, or aircraft suspected of conducting illegal activities may be intercepted by CF-18 fighters.

Related Document:

Canadian Armed Forces - Did you know June 2017