Defence security at North Bay.
A Canadian Forces Military Policeman opens one of the three 19-ton blast doors protecting the underground headquarters of the 22nd NORAD Region at North Bay. These 10-foot square doors can be closed in a matter of seconds to ptotect the vital defence installation.
Courtesy Cliff Ruttan.
The infamous SAGE "Blue Room".
This was the operations room for controlling intercept missions on North Bay's assigned area. Note the Senior Director's dias in the background.
Courtesy DND PL-137732.