To enhance security of the outer perimeter of Lester B. Pearson International Airport (LBPIA). Forming the core of the program is a group of volunteers (aircraft enthusiasts) that will enhance security for the outer perimeter of the airport property while we enjoy our hobby. Partnered with the Greater Toronto Airports Authority (GTAA), contracted airport security and the police of jurisdiction at the airport (Peel Regional Police), the volunteers of the YYZ Airport Watch program will Observe, Record and Report any suspicious activity to airport Security Operations Centre (SOC) or other appropriate airport authorities.
http://www.canairradio.com/airportwatch.html